On April 18, 2016, Olivia Wilde revealed on Instagram that she and fiancé Jason Sudeikis are expecting their second child together.
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Blake Lively and Ryan Reynolds
Sources confirmed to Entertainment Tonight on April 14, 2016 that Blake Lively and Ryan Reynolds are expecting their second child after Lively was spotted at work in Los Angeles trying to hide her growing bump.
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Eva Mendes and Ryan Gosling
Eva Mendes and Ryan Gosling are reportedly expecting another baby, making 17-month-old Esmerelda a big sister, a source told Us Weekly.
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The "Unbreakable Kimmy Schmidt" star announced on April 13, 2016 that she and husband Michael Koman are expecting their first child.
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Megan Fox is pregnant with baby No. 3, ET has confirmed.
The "Teenage Mutant Ninja Turtles" star walked the red carpet at the opening night gala of CinemaCon at Caesars Palace in Las Vegas on April 11, 2016, where she showed off her baby bump.
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Actress Erika Christensen attends the premiere of HBO Films' "Confirmation" at Paramount Theater on the Paramount Studios lot on March 31, 2016 in Hollywood, California.
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Former Playboy model Holly Madison -- pictured with husband Pasquale Rotella and daughter Rainbow Aurora Rotella -- announced on March 29, 2016 that her second child will be a boy.
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Alec and Hilaria Baldwin
Hilaria Baldwin announced via Instagram on March 10, 2016 that she and husband Alec Baldwin were expecting their third child together, a boy.
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Adam Levine and Behati Prinsloo
It was announced on March 10, 2016 that Adam Levine and model wife Behati Prinsloo are expecting their first child together.
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Emily Blunt and John Krasinski
John Krasinski and Emily Blunt are expecting baby No. 2. The actors already have daughter Hazel, who was born in 2014.
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Liv Tyler announced in January via Instagram that she and fiancé David Gardner are expecting their second child together. She also has an 11-year-old son, Milo, from a previous marriage.
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Jena Malone announced on Instagram that she is pregnant. She posted a photo of her baby bump on Jan. 20 along with a poem she wrote about motherhood.
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Audrina Patridge and Corey Bohan
Audrina Patridge of "The Hills" fame announced in December that she and fiancé Corey Bohan are expecting their first child. The couple have been together for seven years.
Click through to see who else in Hollywood is expecting a baby.
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Ronnie Wood and Sally Humphreys
Rolling Stones guitarist Ronnie Wood and wife Sally Humphreys are expecting twins. Wood, 68, already has four grown children.
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Ginnifer Goodwin and Josh Dallas
"Once Upon a Time" co-stars Ginnifer Goodwin and Josh Dallas are expecting their second child together. They are already parents to Oliver Finlay.
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"JWoww" and Roger Mathews
Jenni "JWoww" Farley and Roger Mathews announced at their Oct. 18, 2015 wedding that they are expecting a second child together.
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Michael Buble and Luisana Lopilato
Singer Michael Buble and actress Luisana Lopilato are going to be parents for the second time. They revealed the news in July 2015 via an adorable video posted on Buble's Facebook page this week, starring their son Noah. The couple wed in 2011.