Elisabetta Canalis had no problem showing off her toned behind! George Clooney's former flame shared a photo on Instagram of her bikini bod enjoying life in the sun! Hayden Panettiere showed off summer fun and her bikini bod hanging with a gal pal. Speaking of fun in the sun with your girlfriends, check out High School Musical besties Ashley Tisdale and Vanesa Hudgens hanging out at a Memorial Day bash! But noone does bikinis quite like the Kardashian/Jenner clan. Kendall and Kylie are anything but shy about showing skin on social media, and we know why--these girls really know how to rock a swimsuit!