It's a girl who took part in Big Brother show a few years ago and after coming out of the house did really well for herself, but on a ground that she is really dumb, I mean really thick. I've seen a few shows where they invited her just to ask a few questions and laugh at her inability to answer them - quite a disturbing view, but she didn't seem to mind.... On the other hand, she is pretty easy-going, which (I think) is the reason she was popular with public.
Anyway, this year she was invited back to BB as a celebrity and destroyed her name making some horrible racists comments and bulling a Bollywood actress Shilpa Shetty. Shilpa went to win the show, while Jade went into hiding after and even her perfume "Shhh..." (not very nice smell I must say) was taken off the shelves in the shops...
She showed her ugly side and public (understandably) didn't like it. I'm not saying Mika is wright, but being a proud mutt, it probably got his nerve as well.