The British actress and TV presenter has learned to take pride in her body after struggling with her self-image when she was younger.
She said: "I've learned to celebrate the way I look, although as a kid I thought I was just a geeky, goofy-looking thing. I could never see what the fuss was all about."
Kelly, who has previously topped FHM magazine's annual 100 Sexiest Women in the World list, admits it was her curvy figure which landed her the first job she got after leaving stage school - modelling lingerie for larger-cupped women.
She revealed: "I've always embraced my curves and I don't see why they're anything to be ashamed of."
Kelly recently finished shooting 'Fishtales', in which she stars with her 'Titanic' actor fiancé Billy Zane.
In the movie, Kelly plays a mermaid and Billy plays her love interest.
