Haute & Fabulous: Stars Party with Gucci

Hollywood's heavy-hitters (J.Lo & Marc! Tom & Katie!) come out as Madonna hosts the charity event. By Melissa Liebling-Goldberg

GAVIN ROSSDALE & GWEN STEFANI

The couple take their first red carpet walk since the announcement of Stefani's pregnancy. The mom-to-be glows in a cut-out L.A.M.B gown and Cartier diamonds – the perfect accent to Rossdale's all-black tuxedo.