Britney Spears has been criticised for lip-synched to thousands of fans as she kicked off her tour in New Orleans yesterday. 

The pop princess wowed the crowds with her raunchy dance routines and eye-popping outfits but there was one integral aspect of the show that Brit seemed to overlook - the singing.

It seems that the comeback queen hasn't quite mastered the art of multi-tasking just yet.

The only time the mic appeared to be on was at the end of the show when Brit said, "Thank you New Orleans, you have a good night".

Los Angeles Times critic Ann Powers wrote: "Her singing was dominated by a backing track.

"Her moves were nothing special - defined by much strutting and stripper-like shimmying, with the minimum amount of acrobatics to prove her mettle as a dance-pop queen."

Britney also gave an underwhelming lip-synched, performance of Womanizer before Christmas when she went on U.S and European television to make her debut comeback.

See highlights of Britney's New Orleans show below