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
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney Spears
Britney's young sons, Jayden James and Sean Preston, her mom Lynne, and dad Jamie were at the "GMA" performance to cheer her on. Spears' first tour in five years, which kicks off in March 2009, will hit 27 cities with The Pussycat Dolls as special guests. (Ida Mae Astute/ABC)
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