Pregnant Olivia Wilde Finally Reveals the Gender of Baby No. 2!

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

It's a girl for Olivia Wilde and Jason Sudeikis!

The Vinyl star, who is pregnant with the couple's second child, subtly revealed via Twitter on Saturday that their 2-year-old son, Otis, will soon be a big brother to a baby girl.

WATCH: Olivia Wilde and Jason Sudeikis Are Expecting Baby No. 2!

Wilde tweeted a link to a video slamming presidential nominee Donald Trump for his disrespectful comments on females and body image, which was originally posted by Hillary Clinton. "As someone who is about to have a daughter, this hits me deep in my core," Wilde wrote. "#NeverTrump."

Earlier in the day, the New York native, who has been a longtime supporter of Clinton, seemed to be in good spirits when she was spotted out and about in the Big Apple.

Wilde put her baby bump on full display, rocking an adorable pair of denim overalls over a white tank top. She completed her trendy maternity look with Converse kicks, oversized sunglasses and a choker necklace.

Splash News

NEWS: Pregnant Olivia Wilde Is Baby Bumpin' in Red!

On Wednesday, the 32-year-old actress joked that she was due in three weeks and "successfully did not give birth onstage" while attending the Friars Club Icon Award event honoring her Vinyl director, Martin Scorsese.

Wilde turned heads on the red carpet as she donned a flowy, loose-fitting Valentino dress with Vita Fede Jewelry.

Getty Images

WATCH: Jason Sudeikis Reveals Son Otis' Reaction to Becoming a Big Brother

And it sounds like her son is beyond excited to be a big brother! When ET caught up with Sudeikis at The Angry Birds Movie premiere in Los Angeles in May, the 41-year-old actor revealed Otis' reaction to the exciting news.

To hear what the toddler had to say, watch the video below!

Related Gallery