Showbiz
Rex Features
The model joined the show dressed in a mini-dress, PVC boots and ripped stockings and danced with the group, The Sun reports.
A fan said: "Carmen just oozes sex appeal. She walks on stage and you can't take your eyes off her.
"She was getting extremely close to the female guitarist, and rubbed her boobs against her back."
It emerged last year that the former Pussycat Doll had returned to her former career as a burlesque dancer .
Last month, Electra defended her friend Jessica Simpson who had faced criticism in the media as a result of her apparent weight gain.
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