Twenty-One is a 1991 British-American drama film directed by Don Boyd from a script co-written with Zoë Heller.

She confides directly to the camera about her life, which includes her drug-addicted boyfriend Bobby, an affair with a married barrister, and the dissolution of her parents’ marriage.

Katie's father Kenneth is a naïve car salesman who believes he can still patch things up with his philandering wife.

The film received a rapturous response upon its premiere at Sundance, with Kensit being lauded for a star-making performance by some critics.

[2][3] TV Guide wrote, "Formally, Twenty-One resembles such 'swinging 60s' British films as Alfie and Georgy Girl, in which the slickness of the film's style is undercut by the pain of its characters, accented by anti-illusionist devices like having the characters speak directly into the camera, as Katie does here, prattling on ad nauseam while belaboring the obvious.