I'm a Slave 4 U
The first time Britney went full throttle on the 'va va voom' factor was in this bronzed, sweaty video.
Director Francis Lawrence of Bad Romance fame was instrumental in bringing Britney's sexuality to light. To heat things up, Britney learnt belly dancing and showcased it with panache on the crowded dance floor.
Her stage performance at the 2001 MTV VMAs for this number was equally exciting. In nothing but an itsy-bitsy outfit, BritBrit took the stage with a host of exotic animals ranging from a white tiger to an albino Burmese python thrown across her shoulders.
But of course, PETA were on her case in no time at all.