Photos: Rihanna Goes Bra-Less, Revealinfg Ni-ppl£s in sheer top [18+ Only]

Rihanna suffered major nip-slip as she went bra-less in this retro sheer topwhich she wore to host a private METGala after-party at the Up & Down club on West 14th Street in New York last night.

See more photos after the cut...