Summer may be coming to a close, but flip-flops signed by Zac Efron, Selena Gomez, Alexis Bledel, Hayden Penetierre, and a ton of other celebs are always in style! Stars and surfers alike got together recently in Huntington Beach, California for the 2nd Annual PacSun Pipeline to a Cure event, which benefited the Cystic Fibrosis Foundation.