All hail the side butt! In case you haven't noticed, Hollywood stars have traded in their sexy side boob looks in favor of rump-revealing getups. From Ke$ha's derriere debut to Gwyneth Paltrow's penchant for peekaboo side-panels, click through to see the cheekiest trend to hit the red carpet.
Farewell to the days when Ke$ha reigned in the world of garbage chic. Well, kinda. The shocking pop star dared to bare her derriere in a gauche Givenchy minidress at the 2013 Billboard Music Awards. Though her look wasn't as trash-tastic as some of her previous looks, mud flaps would've provided more coverage.