Video: Matt Cardle smacks Dannii Minogue in the face!

LONDON, ENGLAND - DECEMBER 09: Matt Cardle and Dannii Minogue attend a photocall during the X Factor press conference at the Connaught Hotel on December 9, 2010 in London, England. (Photo by Ian Gavan/Getty Images)

Ouch! Matt Cardle accidentally smacked Dannii Minogue in the face minutes after being crowned the winner of the X Factor 2010.

At the time Matt didn’t realise he’d hit his mentor in the face and to be honest neither did we, it all happened so fast. But now the video has hit the net.

“I felt so bad watching it back – that’s really terrible,” he said on This Morning today.

“I have just Tweeted her an apology about that. That was full on, wasn’t it?”

“She’s been an amazing mentor, I can’t thank her enough,” he added. “She’s going to get a great Christmas present from me when I get a chance to shop.”

Check out the video below. Double ouch!