Girls Aloud promote a new low-calorie chocolate bar

Cheryl, still without her wedding ring, takes a break with Nadine

"I was thinking about maybe popping one on the side of people's saucers every time I make them a cup of tea."

But Sarah Harding admits she's already overloaded on the treats.

At the London's Capital Radio Awards last week, Sarah said: "I worked my way through a whole box the other day."

"I felt quite sick. I wouldn't recommend it."

"I loved doing the ad but I had to eat so much chocolate that, in the end, I asked for a cup to spit it out in. I was eating it from 5am to midnight."

Perhaps not the ringing endorsement Kit Kat bosses were hoping for.