Question: What is the name of the American hip hop singer, rapper, actress, songwriter and producer of this American girl group formed in Atlanta, Georgia in 1990, who contributed to the outfit and stage designs and received a lot of song-writing credits?
Sentence (from "TLC (group)"): The group also recorded four multi-platinum albums, including "CrazySexyCool" (1994) which still remains the only album by a female group to receive a diamond certification from the Recording Industry Association of America (RIAA).
Relevant evidence: No