VIDEO: Britney Spears Wows ‘Good Morning America’

It’s a good day to be Britney Spears.

Not only is this Britney’s 27th birthday, but her rabidly anticipated new album Circus drops today—and her official site has posted a slew of Circus tour dates!

On top of it all, pop music’s reigning comeback queen started out her day with a wicked-hot live performance on Good Morning America.

Jugglers, a ring of fire, and backup dancers clad in circus-animal costumes marked the incendiary performance. View it below:

Apropos of her new album’s title, Spears took the stage of the Big Apple Circus Tent at New York’s Lincoln Center dressed as a sexy, midriff-baring ringleader to perform the album’s title track.

Britney also tore through the album’s #1 hit single, “Womanizer.”

During the program, Britney received video birthday well-wishes from celebrities such as John Travolta, Taylor Swift, Reese Witherspoon and Hugh Jackman. Good Morning America hosts Diane Sawyer and Robin Roberts also presented Brit-Brit with a birthday cake.

Sweet! But who knows how many extra hours in the dance studio Britney will have to put in to burn off all those calories

Want a piece of the crazy Brit action? Head over to Buzznet and enter their awesome new Circus contest!