Audrina Patridge Still Not Pregnant ... Here's Proof

3/23/2012 12:00 PM PDT BY TMZ STAFF
0323_audrina_patridge_SplashIt seems reality stars are getting knocked up left and right these days ... Snooki, Jessica Simpson, Kristin Cavallari, etc. ... but not Audrina Patridge ... at least judging from the way she looks in her bikini.