Posing with fiance Jason Sudeikis, pregnant Olivia Wilde showed off her baby bump in a stunning black Valentino gown on the Oscars 2014 red carpet on March 2. Credit: Jason Merritt/Getty Images

Stunning parents-to-be! Jason Sudeikis and his pregnant fiancee, Olivia Wilde, walked the red carpet together of the 2014 Oscars in Hollywood on Sunday, March 2. Wilde, 29, looked gorgeous while showing off her baby bump in a long black gown.

"We are wearing Valentino and Lorraine Schwartz jewels," the mom-to-be, who is due May 4, joked to E!'s Ryan Seacrest on the red carpet. Wilde, who stars in Best Picture nominee Her, previously joked about picking out her maternity dress for the Oscars on Twitter. "Pic from my Oscar fitting," she captioned a photo on Twitter of an image of a Homer Simpson from the animated sitcom The Simpsons.

Wilde's fiance Sudeikis, looking handsome in a blue Prada tux, is presenting onstage during the 86th annual Academy Awards. The We're the Millers actor, 38, told Secrest he was nervous about mispronouncing names while presenting. "I'm just as nervous as anybody nominated," he quipped.

Tell Us: What do you think of Wilde and Sudeikis' 2014 Oscars red carpet looks?