Kate Middleton gets her groove on to Britney Spears

At least Britney Spears still has one fan - Britain's possible future princess Kate Middleton.

Middleton, showing off her super trim body, last night, took to the dance floor, and got her groove on to TWO of Britney Spears' biggest hits, 'Toxic' and 'Gimme More'.

Kate was celebrating her 26th birthday like any normal twenty-something, opting to party in the shadows of London's Kitts nightclub with only half a dozen close friends and family.

However, boyfriend Prince William wasn't by her side - as he in Lincolnshire for four months of gruelling RAF training at Cranwell.

There was also no sign of her future brother-in-law Prince Harry, either - and Kate even refused the embarrassment of a complimentary birthday cake from the club.

A source told London's Metro newspaper: "Kate looked amazing on the dance floor. She shared some cheeky dances with a few male admirers."

"She was certainly on her game, beaming and throwing her hands in the air when Britney came on."

"She didn't seem to even notice her ice bucket of champers, which was left largely untouched. It took us a few hours to realise she was even there despite the club being half empty."

"She had no crowd. No entourage. She looked more intent on dancing and hugging her pals than drinking."

She twirled her patterned black shift dress until 2.45am before hanging up her heels and heading home.

Earlier, Kate's parents treated her to a slap-up meal at Tom Aitken's restaurant in Chelsea.