Rihanna was all done up Saturday to do a magazine shoot in Malibu. The images are bound for Harper's Bazaar and the singer was excited about her first ever spread in the magazine. She struck a pose in a white gown with a thigh-high slit and also modeled a gold dress. Rihanna tweeted, "I did my first Harper's Bazaar cover today!" She didn't have long to dwell on the West Coast, though.