What Shape Is YOUR bum? The Five Different Types Of Derriere

A plastic surgeon, with an particular expertise in women's behinds, has devised the definitive guide to bottom shape.

According to Dr Matthew Schulman, from New York, all women's derrieres on the planet fall into one of five categories - square, V-shape, A-shape, round or upside-down heart.

Plus he says that knowing which category you fall into can prevent a lifetime of buying unflattering underwear that do nothing to showcase your shape.