Audrina Patridge Is Pregnant: 'Baby on the Way!'

'The Hills' star announced she's expecting with a pregnancy test ad.

The Hills star Audrina Patridge will soon be sporting a baby bump.

Patridge announced to her 915,000 Instagram followers on Friday that she and fiance Corey Bohan are expecting their first child. "I finally figured out what to get Corey for Christmas! #babyontheway #ClearblueConfirmed #ad" the 30-year-old former MTV star captioned a sponsored pic of her holding a pregnancy test. "Couldn't wait to share the news with you all! Xoxo"

After announcing the good news, Patridge took to her blog to share how the couple found out they had a baby on the way.

"It started with me not feeling too well -- I didn’t feel sick, but I definitely knew something was off between my mood swings and lack of energy," she writes. "So, I took the test and TA-DA! I couldn’t even believe my eyes. I called Corey upstairs to make sure I wasn’t just seeing things and, well, let’s just say that he had a permanent smile glued to his face for the rest of the night!"

The hardest thing for the reality star so far? Keeping the exciting news a secret from her friends and family at a dinner party.

"I told everyone I was on a detox cleanse to cover my lack of alcohol consumption," she reveals. "With the combination of my poor lying skills and Corey’s perma-smile, we were given 'the look' over and over again by our friends and family, so it’s safe to say the secret was not a secret much longer!"

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And so far, no morning sickness!

"I just feel very tired and like I have a major hangover when I wake up, which is a change for me because I’m constantly on-the-go!" she shares. "As far as finding out the sex of the baby…We just want it to be healthy:) Girl or boy, we will be ecstatic either way! Corey’s mum wants it to be a surprise, but I don’t know if I’ll be able to wait!"

The parents-to-be have been dating on and off since 2008, and Bohan even appeared on a few episodes of The Hills.

Patridge is the second of the core group of girls from The Hills to get pregnant. Kristin Cavallari gave birth to her third child, daughter Saylor James, this past month.

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