She was once known as the "bad girl of British art", and now Dame Tracey Emin's career is being celebrated at the Tate Modern in a major retrospective of her work, which spans four decades. "She is probably our most significant – and certainly most powerful – British artist of her generation," says Maria Balshaw, Tate director and curator of the exhibition. "She’s a household name." Not least because of her unapologetic, uncompromising and confessional approach to her art.