It's been less than two months since Audrina Patridge announced her pregnancy, but she's already got a tiny baby bump! The former star of The Hills showed off her tummy in a new Instagram snap on Saturday. The post, which shows the mom-to-be standing in her bikini, is perfectly captioned, "For all of you girls asking me to show the bump here ya go!:).... Now this is a debut #selfie." The past few months have yielded a slew of good news for Audrina. Outside of her exciting pregnancy, she got engaged to longtime love Corey Bohan and even showed off her stunning diamond ring. We can't wait to see the little baby bump grow in the months to come!