It's officially Summer! The season and the sport of surfing are almost synonymous since many spend the warm months riding through the water, including your favorite stars. Most recently, Ashley Greene and Vanessa Hudgens slipped on bikinis to tackle the surf in Bali. Robert Pattinson has also graced his paddleboard, while Ben Affleck, Reese Witherspoon, Cameron Diaz, and Justin Timberlake have ridden waves from Malibu to the shores of Hawaii. Plenty more stars have caught the surfing bug — click through to see them all catching (or trying to!) the Summer wave.