Reese Witherspoon got goofy during a surfing lesson in Kauai yesterday. She smiled big and posed while Jim Toth watched from the sand and her kids Ava and Deacon worked on their skills nearby. Reese has been on vacation in Hawaii with Jim, Ava, and Deacon all week, and the foursome has been all about hitting the beach. We've seen Reese in a bikini twice, though she switched up her swimwear on Thursday when she wore a plunging black one-piece to play in the sun. It's been a fun Summer for the star, who also traveled to Europe with Jim for their second honeymoon a few weeks ago.