Britney Spears' "Circus" Comes to Town

Britney Spears celebrated her birthday with a pair of performances on "GMA."

PHOTOS: Britney Spears' 'Circus' Comes to Town

Britney Spears
Britney Spears
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Britney Spears
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Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
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Fans cheered wildly when Spears emerged from a circus wagon to start the show. Later, she crashed through a ring of fire during "Womanizer." (Ida Mae Astute/ABC)
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