Beyonce voted most desirable bikini-clad rear of 2011

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 R&B singer narrowly beat recording rival 23-year-old Rihanna.

“I work hard to stay in shape, so I’m flattered my efforts are being noticed,” the Daily Star quoted ‘The Best Thing I Never Had’ singer as saying.

She edged out ‘Fantastic Four’ and ‘Sin City’ stunner Jessica Alba, who came third. Pop princess Britney Spears, 29, came fourth.

Cameron Diaz, 38, was fifth in the poll of 45,000 viewers carried out by a US cable TV network.