BFFs Cameron Diaz and Drew Barrymore spent a girls' day at Kinara spa on Robertson yesterday. Cameron was all smiles as she entered the facility, she even gave a little wave to the photogs! She and Drew were also in great spirits when they left (who wouldn't be after a day at the spa?), giggling together as Cameron scraped her new Prius on the spa driveway. Could this be the reason Cam's so happy?