London, Jan 21 - American singer Beyonce Knowles likes a curvy, yet well-toned figure.

'I always say, 'I don't want to lose my curves.' I like firm curves. You can never do enough squats, you can never do enough sit-ups. I like for women to look feminine,' femalefirst.co.uk quoted Beyonce as saying.

The 28-year-old had recently revealed that she walks up stairs to maintain a firm butt.

'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. 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,' she said.