BRITNEY'S WEAVE COMES OUT WHILE DOING A SHOW!

During a concert in Oakland, Calif., Thursday night, Britney Spears left a little of herself behind on the stage.

In a sequence where a dancer in an aerial harness lifts a reclining Brit-Brit into the air, one of the singer's blonde locks appears to be torn from her head.

Stress? Poor diet? Or just a hair extension with a mind of its own? Whatever the cause, the runaway hair didn't seem to bother the "Circus" crooner. Ever the pro, Britney stayed in character - well, whatever kind of "character" involves writhing on a velvet chaise and then being hoisted into the skies - without so much as a flinch.