Amber Denise "Sevyn" Streeter (born July 7, 1986) is an American singer, best known for being a member of the girl groups TG4 and RichGirl where she was known as Se7en. She signed to Atlantic Records and released her debut single "I Like It" in 2012.

Her debut extended play Call Me Crazy, But... was released on December 3, 2013. It sold over 17,000 copies within its first week and spawning her first top 40 hit single "It Won't Stop", and "Next". The single achieved gold certification from RIAA marking it as her biggest selling single to date. In 2015, her first extended play (EP) Shoulda Been There, Pt. 1 was released. The extended play was preceded by two singles "Don't Kill the Fun" and "Shoulda Been There".

Her debut studio album Girl Disrupted was released on July 7, 2017. The album has been preceded by the release of five singles "Prolly", "My Love for You", "D4L", "Before I Do" and "Fallen". She has written songs for artists such as Chris Brown, K. Michelle, Usher, Kelly Rowland, Ariana Grande, Trey Songz, Alicia Keys, Fantasia, Brandy, and Tamar Braxton.