This week the singer was said to be “on the best form ever” as she filmed her part in Will.i.am’s new single Scream and Shout.
She looked stunning in a Herve Leger dress and black gloves.
She even insisted on stylists cutting out the midriff area of the £1,000 dress to show off her toned tum.
My spy says: “
She had her groove back and she looked and danced *brilliantly.
“There’s a throw-down section where she performs a solo dance on a podium, and all you hear is, ‘It’s *Britney Bitch’. And then she danced like *crazy.
“She’s got her groove back. X Factor has given her a new lease of life.
“She wants to show people what originally made her so famous again.”