Paris Hilton seems to have lost her mojo after getting booed off stage at Kress nightclub by a group of Britney Spears fans.

The crowd - who had turned out to celebrate Crystal Audigier's birthday - were bitterly disappointed when they discovered comeback queen Britney wouldn't be taking centre stage.

A source tells Page Six that birthday girl Crystal yelled, "Do you want to see Paris Hilton?"

But the nightclub's guests were not impressed.

The source adds, "The entire room - which had just cheered when they thought Britney Spears was coming - booed loudly.

"Paris was practically in tears and left without taking the stage."

See Paris with her ex Benji Madden below