The makers of the Wonderbra yesterday unveiled their latest innovation to help women have the body shape they want - the Wonderbum.

Described as a "technology that lifts, separates and shapes" the parts other tights just don't reach, it promises "a perfectly peachy, pert bottom". The underwear was modelled in public for the first time at a hosiery show in London.

"Let's face it, this is what women everywhere want," said a spokeswoman for the company. "Women would no longer need to turn to the surgeon's knife to achieve that pert look."

The only snag is that there are currently only two pairs in existence. The wobbly majority must wait until the end of next year before Wonderbum hits stores around the world.