Tula Paulina "Tulisa" Contostavlos (born 13 July 1988) is an English singer-songwriter of Irish and Greek descent. She is formerly a member of the British hip-hop group N-Dubz and released her debut solo album, The Female Boss, on November 26, 2012 . She has also written an autobiography, "Honest: My Story So Far". She was also a judge on The X Factor UK in Series 8 and Series 9. In series 8, she mentored the winning act Little Mix.