Kelly Rowland shows them how it's done

Ex-Destiny's Child singer Kelly Rowland showed X Factor contestants how it should be done, performing a medley of her hits on Sunday's results show

Ex-Destiny's Child singer Kelly Rowland showed X Factor contestants how it should be done, performing a medley of her hits on Sunday's results show.

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Kelly Rowland was the first of this year's X Factor mentors to step from behind the judges desk and take to the stage to show the contestants how it's done.

The 30-year-old solo singer originally shot to fame as part of Destiny's Child, alongside pop goddess Beyonce and Michelle Williams.

Wearing a sparkling bra top, matching shorts and a sequined bodice with a train, she kicked off her performance with her hit single When Love Takes Over produced by David Guetta.

Halfway through her dancers whipped of her train leaving Kelly in what looked like not much more than her underwear - and revealing her ultra-toned body.

In a Rihanna-esque raunchy performance the X Factor judge switched tracks to sing her new hit single Down For Whatever.

After the performance, X Factor host Dermot O'Leary handed over to the judging panel for some feedback. Louis excitedly mimicked Kelly saying, "You put it down girl! You remind me of a young Tina Turner. I'm buying the album tomorrow!"

It was originally thought judges Gary Barlow and Tulisa would also take to the X Factor stage with Take That and N-Dubz respectively, but it seems only Kelly was brave enough to perform.

Kelly came under fire on Twitter for her singing, which some said wasn't as good as the contestants she'd been hired to judge. Making matters worse for Ms Rowland, her Destiny's Child bandmate was up next on ITV in A Night With Beyonce immediately after the X Factor, so comparisons between the two were easily made.

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Kelly's performance followed that of Justin Bieber who took to the stage to perform one of the tracks from his Christmas album Under The Mistletoe.

The 17-year-old approached the judging panel and sang at both Kelly and Tulisa.

Justine Bieber famously flirted with former X Factor judge Cheryl Cole the last time he was on the show.

Kelly had to quickly compose herself after her medley to support her two acts Amelia Lily and Misha B as the final two from the public vote. Kelly was then left looking devastated as Misha B was voted off.

Missed Kelly's performance? Watch it in the video below...

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