Kylie Tardis story flies again

A couple of weeks ago, Russell T Davies was telling the BBC staff magazine Arial that rumours of Kylie being the special guest for this year's Christmas Doctor Who were wrong:

A woman like that is booked up two years in advance, and I haven't even started writing the episode yet.

If the idea was to try and keep the element of surprise, like Catherine Tate's materialisation in the Tardis at the end of the last season, it might have helped to ask Kylie to keep it under her hat. She's told InStyle she's in:

"Yes ... my gay husband [stylist, William Baker] is so excited about it! But I'm not going to play a villain."

Not the evil Kyliemonster who ruins everyone's Christmas by blurting out the secret, then?