The hottest pictures from Sunday at the Ball

They don't get bigger than Janet Jackson and she rocked the Ball! Photos by PA Check out the 40 photos.

The JLS are back at the ball! Photos by PA Check out the 27 photos.

She strutted her stuff on stage at the ball. Photos by PA Check out the 45 photos.

Dizzee sent the crowd bonkers at the ball! Photos by PA Check out the 20 photos.

The reigning X-Factor champ wows us at the Ball. Photos by PA Check out the 26 photos.

Backstreet is back for the Jingle Bell Ball! Photos by PA Check out the 31 photos.

This Aussie rock-pop phenomena bring their sassy and rebellious blend of electro pop-rock to the Ball. Photos by PA Check out the 9 photos.

Get ready to get low, low, low, low, low as Flo-Rida performs. Photo by PA Check out the 31 photos.

One of pop's rising stars showcases her raw talent at the Ball. Photos by PA Check out the 11 photos.

Metro Station rock out at the Jingle Bell Ball! Photos by PA Check out the 19 photos.

She's made it big in 2009 with 'Release Me' and now she's live on stage at the Jingle Bell Ball. Photos by PA Check out the 12 photos.

The Strictly judge struts her stuff as she performs at the Jingle Bell Ball. Photos by PA Check out the 17 photos.

Two nights with some of the biggest names in music - these are our favourite moments, what were yours? Check out the 15 photos.

'Bulletproof' and 'In for the Kill' put La Roux on the map and now she's on stage at the O2. Photos PA Check out the 19 photos.

The R'n'B Superstar kicked off Sunday's show. Photos by PA Check out the 35 photos.

See everyone from La Roux to Dizzee Rascal hitting the red carpet. Photos by PA Check out the 17 photos.

We've been out and about seeing what's happening backstage at the Jingle Bell Ball today Check out the 13 photos.

See everyone from La Roux to Dizzee Rascal hitting the red carpet. Photos by PA Check out the 17 photos.