Cheryl Cole in chocolate frenzy

Cheryl Cole eats 25 chocolate bars a day.

The Girls Aloud singer, who was photographed looking painfully thin following her marriage troubles with soccer star husband Ashley, insists she has a huge appetite and can't resist a sweet treat.

Cheryl said: "Of course I am eating. I have spent the last few days pigging out on boxes of KitKat Senses!"

The 24-year-old star - who along with her Girls Aloud bandmates is promoting the new Nestle chocolate bar - admits she struggles to put weight on because she has a fast metabolism. Cheryl explained: "I do find it hard to put weight on once I have lost it. I have that sort of metabolism."

The 'Love Machine' singer also revealed she has grown tired of putting a happy face on since her marriage was rocked by infidelity rumours.

Cheryl added to Britain's Heat magazine: "Sometimes I do just think, 'Please go away.' Sometimes it is a bit overwhelming to have to seem like you're in a good mood all the time."