Britney's Concert Costumes

Go under the big top to see Spears's spectacular – and super sexy! – Circus looks. By Serena Kappes and Aaron Parsley

DON'T CAGE HER IN

The crowd rose to its feet as the singer – wearing a form-fitting bustier and lace-up boots – shimmied in a cage while being lowered from the rafters during the "Circus" opening number.