Chris Pizzello
the "Twilight" stars will be at the MTV Movie Awards because they are screening a never-before seen clip (the one with a glimpse of Bella's wedding gown) from the next movie in the series.
From left, Robert Pattinson, Kristen Stewart, and Taylor Lautner accept the award for favorite movie at the People's Choice Awards on Wednesday, Jan. 5, 2011, in Los Angeles.
Marianna Massey/Getty Images
Newlywed Reese Witherspoon, seen here at the "Water for Elephants" premiere on May 6, 2011, in Sydney, Australia, will be there because she is the recipient of this year's Generation Award.
Alberto E. Rodriguez
You know comedian Jason Sudekis wll be there because he's the host and has been working hard on his jokes all week
Here, Sudekis arrives to the T-Mobile Magenta Carpet at the 2011 NBA All-Star Game on Feb. 20, 2011 in Los Angeles.
AP Photo/Chris Pizzello
"Transformer5s" actress Rosie Huntington-Whiteley, seen here at the Maxim Hot 100 Party, May 11, 2011, in Los Angeles, is expected a tthe MTV awards .
George Pimentel
Actress Cameron Diaz, who is out promoting he new movie "Bad Teacher" will be there, but the question is will she walk the red carpet alone or will she quash rumors of a split by appearing with boyfriend Alex Rodriguez.
Ethan Miller/Getty Images
"Gossip Girl " star Blake Lively, who's been touring Italy this week with new boyfriend, Leonardo DiCaprio is expected at the show. This will be her first red carpet since nude photos of her surfaced on the Internet.
Pascal Le Segretain/Getty Images
Emma Stone is a three-time nominee and she's got a new summer movie to promote ("The Help") , so you can bet she'll be there. Here, Stone is pictured at the Vanity Fair Oscar party on Feb. 27, 2011, in West Hollywood, Calif.
AP
Foo Fighters, seen performing at "The Grammy Nominations Concert Live" in Los Angeles on Dec. 3, 2008, will be among the musical guests.
Gareth Cattermole
" Harry Potter" star Emma Watson will be there to screen a never-before-seen clip of the final movie "Harry Potter And The Deathly Hallows: Part 2,."
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Josh Duhamel, sen here at the 20th annual Women of the Year awards on Nov. 8, 2010, in New York, is a presenter at the MTV Movie Awards
Stephen Lovekin/Getty Images
Newly divorced actor Ryan Reynolds is an awards presenter and he will also be promoting his "Green Lantern" summer movie. Here, People's Sexiest Man Alive for 2011 is seen at a special screening of "Buried" on Sept. 16, 2010, in New York.
AP Photo/Chris Pizzello
Trey Songz is one of the musical acts. Here, he arrives at the Grammy Awards on Sunday, Jan. 31, 2010, in Los Angeles.
Jason Merritt
Actor Jesse Eisenberg , seen here at the 83rd Annual Academy Awards Feb. 27, 2011, in Los Angeles, is both a nominee and a presenter.
Jason Merritt/Getty Images
Singer Selena Gomez, seen here at The 53rd Annual Grammy Awards on Feb. 13, 2011, in Los Angeles, is a presenter. But will she be accompanied by new boyfriend Justin Bieber?
AP Photo/Evan Agostini
"Transformers" star Shia LaBeouf will be there; he's a presenter. Here, he attends the premiere of "Wall Street: Money Never Sleeps" at the Ziegfeld Theatre on Sept. 20, 2010, in New York.
Isaac Brekken/Getty Images
Rapper Nicki Minaj will be there for sure. She's presenting an award. Here, she arrives at the 2011 Billboard Music Awards at the MGM Grand Garden Arena on May 22, 2011, in Las Vegas.
AP
Actor steve Carrell, who just left his role on the NBC hit "The Office" will present one of the awards.
AP Photo/Peter Kramer
Another preseter is actress Leighton Meester, pictured here at the 20th anniversary of The Gotham Independent Film awards in New York, on Nov. 29, 2010.
AP Photo/Danny Moloshok
"Grey's Anatomy hunk and ace car driver Patrick Dempsey will be a presenter. Here, he is interviewed at a premiere during the 2011 Sundance Film Festival in Park City, Utah, on Jan. 28, 2011.
