Rihanna decided it was time for a little vacation. The pop star was spotted rocking Prada sunglasses during her recent trip with friends to Portofino, Italia. A lot of celebrities are rocking these frames. Gwen Stefani, Mary Kate Olsen and Lady Gaga, just to name a few. The Baroque sunglasses are made of acetate, which make the frame light and super comfy. We first spotted the glasses on the Spring/Summer 2011 runway show earlier this year. These frames are a must have!!