Paper is a magazine that has had, as a cover model, a South Korean rapper who was part of what girl group?
Paper (magazine):  Past cover models include Kim Kardashian, Demi Lovato, Katy Perry, Miley Cyrus, Prince, CL, and Jennifer Lopez. CL (singer): Lee Chae-rin (born February 26, 1991), better known by her stage name CL, is a South Korean singer-songwriter and rapper. CL (singer):  She was trained in JYP Entertainment before joining YG Entertainment, and became a member of the girl group 2NE1.
2NE1