Britney Spears was decked out in a tight, bright mini last night to attend a charity bash thrown by the St. Bernard Project in LA. She caused a stir by entering on her own, but Brit soon met up with boyfriend Jason Trawick to pose for photos together. Britney's famous friends came out for the party, including Hilary Duff with her husband Mike Comrie, as well as Kim Kardashian and her ex, Reggie Bush. Kellan Lutz also suited up for the philanthropic event while Selena Gomez and Kelly Osbourne attended in chic LBDs. The evening was organized to raise money for ongoing efforts to rebuild New Orleans following Hurricane Katrina, a cause close to Louisiana native Britney's heart. The guests were treated to a sit-down meal cooked by none other than chef Jamie Spears, and Mike Comrie, for one, was really excited to try his food.