Olivia Wilde Dresses for Two – in Valentino! – at the Academy Awards

Olivia Wilde and Jason Sudeikis

Jordan Strauss/Invision/AP

updated 08/25/2015 AT 8:16 PM ET

originally published 03/02/2014 AT 7:20 PM ET

You’ve heard of moms-to-be eating for two. Well, an expectant Olivia Wilde was dressed for two at the Academy Awards on Sunday.

“We’re wearing Valentino,” Wilde joked to Ryan Seacrest on the red carpet about her high-necked black gown with a streak of white in the back, which she paired with a white clutch and Lorraine Schwartz jewelry.

Wilde, who is expecting a boy with fiancé Jason Sudeikis, also talked about how the couple remember their baby’s due date – which is just two months away, on May 4.

“May the fourth be with you,” they said together.

Wilde has also been having a lot of fun flaunting her growing belly.

She recently posted a playful photo on her Instagram account with the caption: “Sure I’ve looked like this after Mexican food but this time it’s a BABY.”