Rita Moreno wears 1962 Oscars dress
5:35 p.m.: Rita Moreno is reliving her Oscars moment by wearing her dress from 1962, the year she won best supporting actress for her role in "West Side Story." She tells Ryan Seacrest that part of the dress was made from a Japanese obi. Moreno also says that her acceptance speech was only 15 seconds long because she thought she wouldn't win -- Moreno believed Judy Garland was a lock for the award.
Jane Fonda arrives
6:42 p.m.: Jane Fonda has arrived on the red carpet in a fitted white gown, wearing a Time's Up pin. Fonda and Helen Mirren are set to present best actor on Sunday.
The Oscars have broken with tradition by having four actresses present the top two acting categories this year; typically, the previous year's acting winners present the same categories for the opposite gender at the Oscars. But this year, Casey Affleck, who won best actor last year for "Manchester by the Sea," is sitting the ceremony out. Sexual harassment allegations against Affleck resurfaced after he won his award. In 2010, Affleck settled lawsuits by two women claiming that Affleck subjected them to vulgar treatment.
Instead, Jennifer Lawrence and Jodie Foster are to present best actress.
White and neutral gowns rule the red carpet
6:55 p.m.: In contrast to the red carpet blackout during the Golden Globes, many stars are wearing white, blush or nude gowns on the red carpet. Mary J. Blige, Jane Fonda and Janet Mock are among the women wearing stunning white dresses, while Allison Williams and Gina Rodriguez are springing for more subdued nude gowns.
Taraji P. Henson appears to shade Ryan Seacrest
7:17 p.m.: Taraji P. Henson seems to shade Ryan Seacrest on the red carpet during their interview. She says to him, "The universe has a way of taking care of good people." Henson pauses and smiles at Seacrest, and then says, "Know what I mean?" and playfully touches him under the chin.
A Vulture reporter says that Henson said to the next interviewer, "I'm great now that I'm in your company."
Tiffany Haddish wears Eritrean dress
7:34 p.m.: Tiffany Haddish tells Ryan Seacrest she feels like an "Eritrean princess" in her dress from Eritrea. Haddish's father is Eritrean. The "Girls Trip" star is set to present at tonight's show.
Chadwick Boseman wears Wakanda-inspired jacket
7:39 p.m.: Chadwick Boseman is bringing "Black Panther" to the red carpet in a Wakanda-inspired Givenchy jacket with embroidered lapels. Boseman crossed his arms in the signature Wakandan X greeting on the red carpet.
Lupita Nyong'o hits the red carpet
7:53 p.m.: Lupita Nyong'o stuns on the Oscars red carpet in an African-inspired look in a glittery, gold gown. The black and gold beaded Versace dress features a sash across her bodice, and the "Black Panther" actress is wearing gold accessories braided into her hair.
Jimmy Kimmel opens the show
8 p.m.: Host Jimmy Kimmel is opening the Oscars by making a jab at last year's flub, saying that the PricewaterhouseCoopers accounts wanted to do some comedy on their own.
Kimmel addresses the #MeToo movement head-on by saying of the Oscar statuette, "Oscar is the most beloved and respected man in Hollywood ... just look at him. Keeps his hands where you can see them. Never says a rude word, and most importantly, no penis at all. He is literally a statue of limitations. And that's the kind of men we need more of in this town."
He also cracks, "Here's how clueless Hollywood is about women. We made a movie called 'What Women Want' and it starred Mel Gibson. That's all you need to know."
Kimmel points out that though Harvey Weinstein was expelled from the Academy after the myriad allegations of sexual assault against him, another Academy member got the same treatment for "sharing 'Seabiscuit' on VHS" with a neighbor.
Kimmel says he wants there to be real change in Hollywood for women so that "women will only have to deal with harassment at every other place they go." He says he wants the audience to listen to the supporters of #MeToo and Time's Up.
The Oscars host is praising the success of "Black Panther" and "Wonder Woman." He points out that Greta Gerwig is the fifth woman nominated for a best director Oscar, and talks about the disparity between pay between Mark Wahlberg and Michelle Williams.
Kimmel also cracks that Donald Trump calls the "Get Out" the best first three-quarters of a movie and "Call Me By Your Name" was made to upset Mike Pence.
He encourages people to change the world by opening a dialogue with others or joining the students of Parkland in their march on the 23rd.
Kimmel closes his monologue by saying that the Oscar winner with the shortest speech tonight will win a jet ski, pointing to Helen Mirren as she shows off the jet ski.
Viola Davis presents best supporting actor
8:15 p.m.: Last year's best supporting actress winner, Viola Davis, presents the first Oscar of the night for best supporting actor.
Sam Rockwell wins for "Three Billboards Outside Ebbing, Missouri" and thanks his parents for instilling in him his love for movies. Rockwell even says his dad took him out of school once to go to the theater, claiming his grandma was sick. The actor thanks the other supporting actor nominees, his colleagues and his loved ones.
"Darkest Hour" wins best makeup and hairstyling
8:27 p.m.: Kimmel threatens the artists, "If your speech runs over instead of music, you will hear this," as Lakeith Stanfield runs on stage in his "Get Out" costume, shouting "Get out, get out, get out!"
Gad Gadot and Armie Hammer take the stage to present best makeup and hairstyling, which goes to Kazuhiro Tsuji, Lucy Sibbick and David Malinowski for "Darkest Hour."
Eva Marie Saint presents best costume design
8:32 p.m.: The audience applauded as actress Eva Marie Saint, who won an Oscar for "On the Waterfront" in 1955.
"That means so much to me, having lost my husband last year after 65 years," she said of the applause. "We would come to this [show] every year and I miss him and that made up for it. That was so loud, I know he heard it."
Saint presents best costume design, which goes to Mark Bridges for "Phantom Thread."
Greta Gerwig and Laura Dern present best documentary
8:40 p.m.: Kimmel jokes that documentaries show, "Where there is darkness there is also hope, except at the White House. Hope quit Wednesday," before introducing Greta Gerwig and Laura Dern to present the award.
Bryan Fogel and Dan Cogan win for "Icarus," a documentary that follows Fogel's investigation into international sports doping, have applauded the International Olympic Committee's decision to ban Russia from competing in the 2018 Winter Olympics over the country's doping scandal.
Fogel gives a shoutout to whistleblower Grigory Rodchenkov, who he says is now living in great danger.
Mary J. Blige sings "Mighty River"
8:44 p.m.: Taraji P. Henson introduces a performance of "Mighty River" from "Mudbound" by Mary J. Blige.
Blige takes the stage in a red dress, singing while scenes from "Mudbound" play in the background. Later, Blige performs in front of a choir of singers against a raining, rural backdrop. Blige is nominated for best supporting actress and best original song.
Ava DuVernay and Issa Rae star in Twitter ad
8:50 p.m.: Ava DuVernay and Issa Rae are among the many women whose faces appear in a Twitter ad that declares "#HereWeAre." Writer Denice Frohman recites one of her poems in a voiceover: "I heard a woman becomes herself the first time she speaks without permission ... Say beautiful, and point to the map of your body. Say brave, and wear your skin like a gown ... Say hero and cast yourself in the lead role."
"Dunkirk" picks up both sound awards
9:02 p.m.: Kimmel talks about the first Oscars, held 90 years ago, and says he wants to share the first joke told at that show by host Douglas Fairbanks Sr.: "Christopher Plummer is tonight's youngest nominee," says Kimmel. "Still holds up."
Eiza Gonzalez and Ansel Elgort of "Baby Driver" present best sound editing and best sound mixing. Richard King and Alex Gibson for "Dunkirk" win for sound editing.
Mark Weingarten, Gregg Landaker, Gary Rizzo of "Dunkirk" win for sound mixing.
"The Shape of Water" wins best production design
9:11 p.m.: Kumail Nanjiani and Lupita Nyong'o take the stage to present best production design. Nanjiani claims that his real name is Chris Pine, and "Kumail Nanjiani" is just his stage name.
The two turn serious, and Nyong'o points out that the two are both immigrants: She is from Kenya and Nanjiani is from Pakistan.
"To all the Dreamers out there, we stand with you," says Nanjiani.
The Oscar goes to Paul Denham Austerberry, Shane Vieau, Jeffrey Melvin for "The Shape of Water."
A performance from "Coco"
9:14 p.m.: Mexican actor Eugenio Derbez introduces Gael Garcia Bernal, Miguel and Natalia Lafourcade to the stage to perform "Remember Me" from "Coco."
After a verse from Bernal, the stage opens to show a brightly lit Mexican-themed set with a fleet of dancers in traditional Mexican clothes as Miguel and Lafourcade sing, closing the performance out with fireworks and confetti.
Rita Moreno presents best foreign language film
9:25 p.m.: Kimmel says he's upping the ante for the shortest acceptance speech of the night, adding that the winner will also get a trip to sunny Lake Havasu in addition to the jet ski.
Rita Moreno makes a dramatic entrance on stage, posing and dancing up to the microphone in the same dress she wore to the 1962 Oscars to present best foreign language film.
"A Fantastic Woman" from Chile wins the award, a first for the country. Director Sebastián Lelio thanks star Daniela Vega for inspiring the film.
Allison Janney wins best supporting actress
9:30 p.m.: "Moonlight" star Mahershala Ali presents best supporting actress. Allison Janney wins her first Oscar for her role in "I, Tonya."
Janney jokes, "I did it all myself," and then says, "Yeah, right," as she thanks her colleagues and supporters.
"Coco" wins best animated feature film
9:42 p.m.: Kimmel's "9-year-old self" appears on stage wearing a "Star Wars" T-shirt and says to the host, "Hi, 60-year-old self," and Kimmel responds that he's only 50, to which the kid Kimmel says he should have taken care of himself.
The stars of "The Last Jedi," Kelly Marie Tran, Oscar Isaac, Mark Hamill and BB-8 take the stage to present best animated short film -- Hamill says, "Don't say 'La La Land'; don't say 'La La Land,'" as he opens the envelope. The award goes to Glen Keane and Kobe Bryant for "Dear Basketball."
Bryant takes a shot at Fox News host Laura Ingraham after Keane says everything is possible and responds, "I don't know about that -- as basketball players we're supposed to shut up and dribble."
Director Lee Unkrich says, "Biggest thanks of all to the people of Mexico. Coco would not exist without your endlessly beautiful culture and traditions. With 'Coco' we tried to take a step forward toward a world where all children can see characters in movies that look and talk and live like they do. Marginalized people deserve to feel like they belong. Representation matters."
Daniela Vega, the first transgender Oscar presenter, introduces Sufjan Stevens to the stage. Stevens wears a pink jacket and performs a soulful rendition of "Mystery of Love" from "Call Me By Your Name," accompanied by St. Vincent.
"Blade Runner 2049" wins best visual effects
9:54 p.m.: Gina Rodriguez and Tom Holland present best visual effects, which goes to John Nelson, Gerd Nefzer, Paul Lambert and Richard R. Hoover for "Blade Runner 2049."
"Dunkirk" wins film editing
9:58 p.m.: Oscar winner Matthew McConaughey presents the award for best film editing, which goes to Lee Smith for "Dunkirk." Smith thanks director Christopher Nolan, saying that Nolan himself is really an editor, among other colleagues and family.
Kimmel jokes that before "Dunkirk" went into the editing room, it was a romantic comedy starring Reese Witherspoon.
Kimmel reveals prank
10:09 p.m.: Kimmel sets up his big stunt for the night, showing a night vision shot of the audience at Grauman's Chinese Theatre, who were lured there to see "A Wrinkle in Time." But Kimmel grabs Gal Gadot, Lupita Nyong'o, Guillermo del Toro, Margot Robbie, Kimmel's sidekick Guillermo Rodriguez and more to go surprise the unsuspecting audience.
The stars stand outside the theater with baskets of treats, and Kimmel and Gadot enter to introduce themselves to the audience; Kimmel tells them they're live at the Oscars. Kimmel also points out that the audience smells like they've been smoking marijuana, and that they have some snacks he thinks they'll appreciate as the rest of the stars come into the theater to pass out food.
Kimmel grabs an audience member -- Mike Young from Lake Gaston, North Carolina -- and has him introduce the next presenters, Tiffany Haddish and Maya Rudolph.
Maya Rudolph and Tiffany Haddish present awards
10:15 p.m.: Comedians Maya Rudolph and Tiffany Haddish appear on stage holding their shoes in their hands, complaining about how much their feet hurt. Rudolph claims her pinky toe fell off because she's been wearing the heels since the Critics' Choice Awards.
Then Haddish asks if the Oscars are too black, but Rudolph says, "Don't worry. There are so many more white people to come." The two present documentary short subject and live action short film.
Best documentary short subject goes to "Heaven is a Traffic Jam on the 405" and director Frank Stiefel remarks that his kids' Oscars party must have suddenly gotten louder. He thanks artist Mindy Alper, the subject of his film.
"The Silent Child" wins best live action short film. Director Chris Overton and filmmaker and star Rachel Shenton sign as they the award, pointing out that so many children live in silence.
Bana Alabed, Tarana Burke appear for performance
10:20 p.m.: Dave Chappelle talks about the hard work activists do, joking that no one enters activism to "make a killing" before introducing Andra Day and Common to sing "Stand Up for Something" from "Marshall."
"We stand for the Dreamers. We stand up for the immigrants," said Common.
Ashley Judd, Salma Hayek and Annabella Sciorra take the stage
10:30 p.m.: Ashley Judd, Salma Hayek and Annabella Sciorra say they are full of emotion as they praise the #MeToo movement and present a video on inclusion in Hollywood. Judd and Hayek both accused Harvey Weinstein of sexual misconduct; Sciorra, who accused Weinstein of breaking into her home and raping her, addresses the audience and says, "It's nice to see you all again. It's been a while."
Mira Sorvino, Kumail Nanjiani, Hayek, Ava DuVernay, Barry Jenkins, Lee Daniels, Greta Gerwig and others talk about why it's beneficial to everyone to prioritize representation in film, and say that diversity is the future of film.
"Call Me By Your Name" wins best adapted screenplay
10:34 p.m.: Chadwick Boseman and Margot Robbie present the award for best adapted screenplay, which goes to James Ivory for "Call Me By Your Name," who thanks his life partner Ismail Merchant in his acceptance speech.
"Get Out" wins best original screenplay
10:37 p.m.: Nicole Kidman presents best original screenplay, which goes to Jordan Peele for "Get Out," his first Oscar. Peele jokes to people, "You guys are going to ruin my jet ski," waving at them to stop applauding. He says he never thought the film could get made, and thanks his collaborators and family and everyone who bought a ticket for the film.
"Blade Runner 2049" wins best cinematography
10:54 p.m.: Wes Studi, the first Native-American Oscars presenter, talks about his time in the army and serving during the Vietnam War before introducing a video montage to thank and honor military men and women around the world.
Kimmel apologizes to service people around the world because the Academy included a clip of his nemesis, Matt Damon, in the montage.
The host jokes about Barbra Streisand's cloned dogs and says in Hollywood, "even our pets are remakes."
Sandra Bullock takes the stage and asks the stagehands to dim the lights so she can "go back to [her] 40s." She presents the award for best cinematography and says, "Here are the four men, and the one trailblazing woman, who are nominated for achievement in cinematography." The award does not go to the first woman nominee, Rachel Morrison, and goes instead to Roger Deakins for "Blade Runner 2049."
Zendaya introduces Keala Settle to perform "This is Me" from "The Greatest Showman." Settle performs with a spirited chorus of backup singers and a band.
"Coco" wins best original song
11:02 p.m.: Christopher Walken, who won a best actor Oscar in 1979 for his role in "Deer Hunter," presents the award for best original score, which goes to Alexandre Desplat for "The Shape of Water."
"Mary Poppins Returns" stars Lin-Manuel Miranda and Emily Blunt present best original song, which goes to Kristin Anderson-Lopez and Robert Lopez for "Remember Me" from "Coco."
11:09 p.m.: Jennifer Garner introduces Eddie Vedder to the stage for a performance of "Room at the Top" for the show's in memoriam segment.
The segment pays tribute to artists who died in the past year, including Chuck Berry, Martin Landeau, Glenne Headley, Roger Moore, Sam Shepard, George Romero, Sridevi, Don Rickles and Jerry Lewis.
Guillermo del Toro wins best director
11:16 p.m.: Emma Stone presents best director and says, "These four men and Greta Gerwig created their own masterpieces this year," as the audience roars. "They are the nominees for achievement in directing." The award goes to Guillermo del Toro for "The Shape of Water."
"I am an immigrant like ... many, many of you and in the last 25 years, I've been living in a country all of our own," del Toro says. The director says of Hollywood, "I think the greatest thing the industry does is erase the line in the sand. We should continue doing that, when the world tells us to make it deeper."
Gary Oldman wins best actor
11:28 p.m.: Jane Fonda and Helen Mirren join forces to present best actor.
Fonda praises the Oscars' set and says, "How about these sets? Are these sets great? They're just like the orgasmatron from 'Barbarella.'"
Later, Fonda and Mirren point out that the Oscar is older than they are, and Mirren cracks, "That's an anomaly here, isn't it? An older man with a younger woman."
Gary Oldman wins best actor for "Darkest Hour." He says he's grateful to America for the loves and friendships he has made, and thanks his colleagues and family.
Frances McDormand wins best actress
11:35 p.m.: Former winners Jennifer Lawrence and Jodie Foster take the stage to present best actress, with Foster on crutches. Lawrence asks Foster what happened to her and she jokes, "Streep. I prefer not to discuss it."
"No it's cool," claims Lawrence. "She tripped me once."
Frances McDormand wins the best actress Oscar and says, "I'm nervous. If I fall over, pick me up because I've got something to say."
She also says this must be how Chloe Kim felt when she won the gold medal at the Olympics. McDormand asks every female nominee to stand in the audience as she says, "All the female honorees, stand with me -- all the women. Look around because we all have stories to tell and projects we need financed."
"The Shape of Water" wins best picture
11:49 p.m.: With only the best picture category left, Kimmel jokes, "From here on, nothing can go wrong ... It's WaterHouse under the bridge."
Faye Dunaway and Warren Beatty, who presented 2017's best picture award, take the stage. Dunaway jokes, "As they say, presenting is lovelier the second time around."
"The Shape of Water" wins best picture.
Director Guillermo del Toro says, "Growing up in Mexico, I thought this could never happen. It happens. I want to tell you -- everyone that is dreaming of using fantasy to tell the stories about things that are real -- in the world today, you can do it."
Kimmel announces that costume designer Mark Bridges is the lucky winner of the jet ski, as a reward for having the shortest speech.
"Apologies to Matt Damon," he jokes. "We ran out of time for him."