Many stars came out to celebrate President Clinton's 65th birthday last night at The Clinton Foundation's Decade of Difference Gala at LA's Hollywood Palladium. Sticking with a blue and white theme, Jessica Alba stepped out in a sheer blouse paired with a navy skirt while Rachel Zoe wowed in a gown. Modern Family's Sofia Vergara chose a sexy, strapless LBD that complemented her fit figure. It was another date night for Jessica and her husband, Cash Warren, who dined at a table with friends Joel and Benji Madden. Rachel was also joined by her husband, Rodger Berman, but this time they left their well-dressed son, Skyler, at home. The dinner kicked off a weekend full of celebration honoring the former president's philanthropic organization. The events continue tonight with the Decade of Difference concert streaming live around the globe with performances from Usher, Lady Gaga, Kenny Chesney, Juanes and K’Naan, The Edge, and Bono.