Kelly Rowland is jealous of Mel B's six-pack.

The When Love Takes Over singer is envious of Mel's toned stomach and fears she will never look as good as the 34-year-old mother-of two because she is addicted to carbohydrates.

The 28-year-old star said: "I think Mel B looks so good, I really do. I'm trying to do more crunches so I can almost get a tummy like hers but I like rice and pasta and that's the problem right there."

The former Spice Girls star - who is married to Stephen Belafonte - recently put her new figure down to having sex five times a day.

Mel said: "I'm honestly not body-obsessed - I can't be with kids and a husband.

"My husband likes my muscles, but then he's seen me every which way over the past eight years - including when I put on 42lbs after my last pregnancy and he always loves my body.

"In fact, on top of all my exercise, I have sex with him five times a day - maybe that has something to do with it. I have to admit, I'm a nymphomaniac with him. It's sexercise!"