Beyonce reveals the secret behind perfect butt

Washington, (ANI): Beyonce Knowles has revealed the secret behind keeping her famous butt in shape - climbing flights of stairs. The ''Halo'' singer has admitted that although she was born with a shapely bottom, she does her bit to maintain it by climbing flights of steps.

"I guess my butt is natural. But I go through stages like every woman. I like being curvy but sometimes I get curvy in the wrong places," Contactmusic quoted her as saying. She added: "After New Year I do stairs - they are the best thing for butt cheeks. Every January I'll start working out. I'll do that for three months and then stop again!"

However, despite being proud of her body, the 27-year-old singer hates to be mentioned on lists of the world's sexiest women, as she believes beauty is in the eye of the beholder.

"Some people think one thing is beautiful, some think another is. When people say that I am 'most beautiful' or 'most sexy', it bothers me. I like fashion and I like to look good. I like to try at least, but everyone has their own opinion," she said.