Sugababes star Keisha Buchanan is set to have a hernia operation

She said: “I have a hernia that I’m going to have operated on soon. I get so stressed that I can’t look at our itinerary as I get flustered and worry.

“I worry how I’m going to pose in pictures, what I’m going to say in interviews, I never know what we are doing – I just can’t cope with it.

Everyone tells me not to worry but I can’t help it. That’s just how I am.”

Keisha – who is currently topping the British singles charts with the band’s new song ‘About You Now’ – also said her skin is suffering as a result of the stress.

She added: “My main insecurity is my skin. I had chicken pox when I was 17 and now whenever I’m stressed or tired, out comes a spot attack. I’ve seen a lot of specialists and they’ve given me creams, but they don’t work. I don’t get depressed about my skin but it is annoying.”