The Hills are alive... with the sound of birthday celebrations! Kristin Cavallari, who appeared on MTV’s Laguna Beach and The Hills, turned 27 years old on January 5. And though the former reality star partied it up with her NFL quarterback husband Jay Cutler, she didn’t have even one sip of alcohol the entire night.

Kristin is currently pregnant with her second baby, so drinking alcohol right now isn’t really an option. She and Jay announced they were expecting at the end of October, and she’s already sporting a bit of a baby bump.

On Sunday night, Kristin posted an Instagram photo from her birthday celebration. Her long blonde hair is styled in flowing waves, and she’s wearing a figure-hugging black dress. Unfortunately, though, Kristin’s sitting down in this shot, so we don’t have too good a look at her bump.

Hubby Jay sits next to her, and the two are clinking glasses. However, Kristin makes sure to point out that the contents of her beverage are a bit different than Jay’s.  “Thank u for all the birthday love. Enjoying a "mock-tail" for the big 2-7!” she wrote.

The couple’s son, Camden, 16 months, appears to have stayed home for the evening. Though Kristin’s said it would be “fun” to have another boy as a playmate for Cam, she’d also love to have a daughter. Which do you think it will be?

Source: Kristin Cavallari on Instagram


Beth Douglass is an Associate Editor at Wetpaint Entertainment. She's our resident Glee expert and loves celebrity kids. Follow her on Twitter and Google+!