Girls Aloud star Kimberley Walsh says she wants to have a fantastic body like popstar Jennifer Lopez.

The 29-year-old singer herself has envious curves but she thinks that the American Idol judge has the perfect hourglass figure.

"It's a really tough call at the moment, but I think Jennifer Lopez is in great shape.

She looks fantastic," she said. Walsh, who is in a long-term relationship with Justin Scott, says she is not overly obsessed with her weight but has found a regime that works for her.

To maintain her shape, the singer hits the gym several times a week, which means she can indulge in her favourite foods.

"I wouldn't necessarily say I'm too obsessive health-wise, but I have been working out for the past year or so.

I've realised I can either exercise and eat normally or I can diet and not work out - so I work out. It's more fun and it definitely makes you feel more virtuous," Walsh said.