Big Brother turns Big Sister?

All twelve of the contestants entering the house tonight will be female, according to The Mirror.

The shock launch night twist will set the tone for a more light-hearted series in the wake of the controversial celebrity version earlier this year.

"It'll be a brilliant opening," a source told the newspaper. "The girls will all be arriving one by one and wondering where the boys are. It will slowly dawn on them that there aren't any."

One male - rumoured to be Oldham Athletic striker Chris Hall - will be added in a special live show on Friday night. "We aim to put a hunk in first, not a geek or a gay, so the girls will get to flirt and fight over him," explained the source.

After a few weeks, several girls will be evicted en-masse and a gang of lads will be ushered in. The insider added: "It is almost as if the show will start all over again further down the line. This ensures the series is kept fresh."