EXCLUSIVE: Jason Wahler and Pregnant Wife Ashley Reveal Their Baby's Gender

Jason Wahler

They had a sweet gender reveal party with their friends and family!

Baby bliss! Hills star Jason Wahler and his wife, Ashley, announced the gender of their unborn child at a small gathering of family and friends at their home in Orange County, California, on Sunday.

WATCH: EXCLUSIVE: 'The Hills' Star Jason Wahler Expecting First Child With Wife Ashley!

The pair, who wed in 2013, treated their guests to blue and pink cake pops, tasty sandwiches and salads, and blue and pink cupcakes, ET has exclusively learned about the special day.

Jason Wahler

Everyone got a “Team Boy” or “Team Girl” button to wear for the big reveal. To announce the exciting news, the couple popped a giant black balloon, which revealed…. it’s a girl!

It will be the first girl in the Wahler family in 39 years.

Jason Wahler

Wahler captured the sweet moment on his Instagram. The former reality star seemed to be rooting for a boy, wearing his blue button and jokingly telling the “Team Girl” guests to “get out” before the reveal.

Their baby girl is due in August.

Jason Wahler

Wahler first announced that they were expecting in late February, posting a picture of a baby onesie with some sonograms, writing, “So blessed!”

Jason Wahler

"We are so overjoyed and excited for this baby!" the couple previously told ET. "We absolutely LOVE kids and are so happy to finally be starting a family of our own."

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It will be the first child for the rehab clinic employee. And he’s not alone! Several other Hills stars, including Wahler’s ex, Lauren Conrad, are expecting this year.

For more on Hills pregnancies, watch the clip below!