Drew Barrymore and a pregnant Kate Hudson led the stylish way to a benefit dinner for the Natural Resources Defense Council's Ocean Initiative on Saturday, held at the Malibu home of movie executive Ron Meyer and his wife Kelly. The evening was cohosted by Chanel, which helps explain the high-fashion picks of the guests like Rachel Zoe and Courteney Cox. Drew Barrymore brought along her boyfriend Will Kopelman, and there were other happy duos there, too. Kate Hudson and her fiancé Matthew Bellamy made a fancy entrance following a low-key week of outings to see her son Ryder's athletic events and casual lunch dates. Expecting parents Bryce Dallas Howard and Seth Gabel also made it a date night, as did Seth Gabel and his wife Caroline Fentress, Gabrielle Reece with Laird Hamilton, and Barbra Streisand with James Brolin. Drew and Will led the PDA stakes, though, as is their usual habit. They kissed on their way inside Rob and Kelly's house, with Drew decked out in an outfit from Chanel that she likely picked out during a visit to its Beverly Hills shop last week.