She's been the feckless twenty something Daisy in Spaced and the permanently dieting Cheryl in The Royle Family.
Now Jessica Stevenson is getting assertive in her new role in Tomorrow La Scala. She plays Victoria, the ambitious young director of an opera company with the bright idea of staging the musical Sweeney Todd in a top-security jail.
Jessica Stevenson joins Jenni to talk about the trials of playing the bossy director and her own life-long determination to be an actress. 'Tomorrow La Scala' can be seen tonight on BBC2