Audrina Patridge, who shot to fame on MTV's The Hills, has announced she is expecting her first child with fiance Corey Bohan.
The 30-year-old star posted the announcement to her Instagram with a photo of herself holding a Clearblue pregnancy test.
"I finally figured out what to get Corey for Christmas! #babyontheway #ClearblueConfirmed #ad (blog post with all the details will be up today!) xoxo," she wrote.
Speaking to Us Weekly she revealed she took a pregnancy test at her parents' house in LA.
"I was super excited," she said, "I asked [Corey] to have a look at the test and make sure I wasn't seeing things!
"You never really expect it to say 'pregnant'. He had a big smirk on his face and was really happy about it."
The news came as a happy surprise to the couple, who got engaged last month after a seven year relationship.
Their first date was captured on The Hills as Audrina recovered from her break-up with Justin 'Bobby' Brescia in 2008.
Audrina and Corey, a BMX dirt bike rider, split twice, once last year and once in 2011.
She has promised to keep fans up to date with her pregnancy's progress via her blog.