Diet Guru Gillian McKeith came a cropper last week while having a public row with X factor judge Louis Walsh.

Louis very publicly criticised the star last week, and Gillian saw red when she ran into him at The Princes Trust concert at the weekend. She got so carried away in her rage she slipped, fell over and sprained her wrist.

One onlooker said: “She was absolutely fuming when she spotted him. She yelled that he was being unprofessional and trying to ruin her chances before the show even started.

“Louis couldn’t get a word in edgeways and went redder and redder.” Gillian, famous for publicly analysing fat people’s pooh on her show You Are What You Eat, was eventually dragged away by I’m A Celebrity winner Kerry Katona.

But as she prepared to make an exit, mum-of-two Gillian slipped on spilled wine and crashed into a table covered in empty glasses.

“It was very embarrassing. Gillian sprained her wrist and has been telling everyone who’ll listen how it’s all Louis’ fault,” said the onlooker. Gillian, who suffers from the spinal condition scoliosis, said yesterday: “Louis really hurt me with those comments. To insult someone’s looks is out of order. I gave him a piece of my mind. I was upset when I walked off. I wasn’t looking where I was going and slipped. But my wrist’s getting better. I hope the sling’s off in time for the show.”

Yesterday former Westlife manager Louis tried to play down the incident. “She hasn’t taken me to task about anything,” he insisted, adding mischievously: “There’s no way I’d have any sort of consultation with Dr Gillian McKeith.”