Kelly Rowland is a chocolate addict.

The 'When Love Takes Over' singer has demanded that there be no chocolate at her concert for Sir Elton John this weekend because she is obsessed with the sugary treat.

To make sure that she doesn't succumb to her sweet-toothed craving she has also asked for a hypnotist to be backstage.

Kelly is set to perform a medley of her former band Destiny's Child's hits at the Elton John Aids Foundation winter party.

It is not the first time that Kelly has been worried about what she is eating.

Last month, the 28-year-old admitted she is inspired to stay slim when she sees girls in Miami looking good.

She said: "When I look outside there are these little shirts and shorts on these women around Miami Beach. It's extremely fly and it makes me want to put my little shorts on."

She also admitted that when she gets lazy she treats herself to burgers, ice cream and cookies.