Rihanna appears on the new March issue of Vogue, making it the third time she's covered the magazine in four years. The R&B star sports au natural makeup, a sheer black crop top and jeans in the cover shot. Inside, she dishes on her personal style rules, such as, "If I'm wearing a top, I don't wear a bra. If I'm wearing a bra, I just wear a bra." Despite her infamous penchant for showing skin, Rihanna claims she has a masculine style. "I love baggy things," she says. "I wear men's clothes, men's shoes, oxfords, creepers." The 25-year-old says she started dressing like her brother as a kid as a form of rebellion, but, "After a while, it was just easier for Mom to dress us both the same. We wore the same jeans, the same T-shirts."