Audrina Patridge posed in a skimpy bikini in the ads for Bongo's Spring campaign. We got a look at behind-the-scenes photos from the shoot, where she donned multiple outfits and cuddled up to her cute new dog, Lady. Audrina was last in the spotlight for the brand when she got sexy for their Fall 2010 line. Her time in front of the cameras will continue as she films her new reality show while her former The Hills costar, Lauren Conrad, gets to work on her own series. LC just celebrated her 25th birthday, and we took a look back at some of her cutest Twitter pictures, which included their pal Stephanie Pratt.