Spears' Choreographer Quits Tour

Britney Spears has been dealt a major blow ahead of her upcoming tour - her longtime choreographer has quit as she prepares to hit the road again.

The pop superstar has worked with Brian Friedman for many years - he famously created her moves for videos including Toxic, I'm a Slave 4 U and her recent offering Hold It Against Me, as well as a number of her live shows.

Spears is set to head off on tour this summer in support of her new album Femme Fatale, but she will now have to put the shows together without Friedman.

In a series of posts on his Twitter page, Friedman writes, "To put rumours and questions to rest... Due 2 (sic) scheduling conflicts I'm not able 2 (sic) work on Brit's FF tour. I'm so thankful 2 (sic) have had the opportunity 2 (sic) reconnect on videos & promo tho (though)!... Jamie King will be directing the tour again & has a great line up of new choreographers! Everyone make sure to go & support! I'll be there!"