Red Velvet (Korean: ????; RR: Redeu Belbet) is a South Korean girl group formed and managed by SM Entertainment. They originally debuted on August 1, 2014, with the single ''Happiness'' with the four-member line-up of Irene, Seulgi, Wendy, and Joy. A fifth member, Yeri, joined in March 2015, following the release of their first extended play, the c...