Audrina Patridge Shows Off Burgeoning Baby Bump in a Skimpy Bikini

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Audrina Patridge
is starting to show, but only just barely!

The former Hills star shared a bikini shot featuring her "mini bump" over the weekend, writing, "Burrito or baby?"

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

In another shot from her beach day, the 30-year-old reality star posted a shot with her BMX rider fiance, Corey Bohan, 34, adding the caption, "Time to work on my tan!"

WATCH: Celebrity Baby Bumps to Keep an Eye on This Winter

The couple became engaged last November, after dating on and off since 2008. In December, Audrina announced that she and her biker beau were expecting.

"I finally figured out what to get Corey for Christmas! #babyontheway," the excited mama-to-be shared on Instagram.

Watch the video below.