Star turn Kelly Brook worried Strictly Come Dancing bosses this week by threatening to quit the show after arguments with dance partner Brendan Cole.

The busty model apparently sotrmed out of rehearsals on Thursday after becoming exasperated at the volatile dancer's unrelenting training regime.

However, the BBC and Kelly's management team sprang into action to pour oil on troubled waters, and managed to persuade her to give it another go - and Brook made her bow on the debut show last night.

A source tells the Mirror, "Brendan was trying to teach her a more adventurous move. He was trying to hammer it into her but it wasn't working.

"Kelly was upset and walked straight out of the building and into her car. Brendan accepts that sometimes he pushes too hard but he thinks he and Kelly stand such a good chance of winning that he pushes her.

"Brendan realises he's been pushing her too hard and said sorry, but he really wants to win the show."