'The Hills' star Jason Wahler's wife expecting a baby girl

Actor Jason Wahler and his wife Ashley Slack are expecting a baby girl.

The 30-year-old star announced the news of their first child's gender in an adorable video on Instagram.

In the clip, Jason and Ashley were standing in front of friends with a giant black balloon.

"Okay, raise of hands, who thought it was a girl?" Ashley asked before the reveal, with a few people in the crowd raising their hands.

Jason then thanked his friends and family who showed up to his party.

The couple tied the knot in 2013.