Which slightly unhinged popular former virgin has the Simon Cowell managed to trick into appearing on his show? It's Britney, bitch. Ms Spears will perform her new single Womanizer on the X Factor. Here's what Simon says:

"Yes, I think Britney Spears is going to perform on The X Factor. She's got a record coming out. We're absolutely thrilled to have her," and with his famous tact: "The fact that she goes a bit crazy occasionally makes her more interesting."

"I've always said this about Britney--That she's a hugely talented person. Everyone wants to work with her because she's a star. She's the number one booking in the world at the moment for a show."

But what if she, you know, goes batshit again?

"If she wants to shave her head before she comes on the show, she's welcome to. I don't care. And now she has her career back on track. Fantastic. I'm thrilled."