Born in Birmingham, Steff moved to Rotterdam, South Holland, the Netherlands with her family when she was five years old. Fluent in Dutch, she then returned to the U.K., moving to London at the age of 14. She made her first appearance in 2015 on a cover of Wretch 32's "[r=6542411]". On December 16th, 2016 she released her debut mixtape "Real Ting" on 54 London, a subsidiary of Universal Music Group.