Go under the big top to see Spears's spectacular – and super sexy! – Circus looks. By Serena Kappes and Aaron Parsley
Credit: Kevin Mazur/WireImage
Updated: Wednesday Mar 04, 2009 | 12:20 PM EST
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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.
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