R&B diva Beyonce's curves have fetched her the top position in a poll, set to find the most desirable bikini-clad rear of the year.

The 29-year-old singing sensation, who famously sang one of her earlier hits Bootylicious with her bandmates back in 2001, has narrowly beat recording rival 23-year-old Rihanna.

The Rude Boy hitmaker was an obvious favourite. Not long ago, Rihanna had flaunted her rear for the Rolling Stone magazine and set the temperatures soaring.

Some reports claim that the Caribbean hottie gave a lap dance to a female fan at the opening of her latest North American tour.