Check out the video.

Britney Spears made her 200th "comeback" this morning on GMA, singing her hit "Womanizer."

Brit-Brit celebrated her 27th bday with Sean Preston and Jayden in the audience cheering her on under the circus big top. She also announced her concert tour would begin in New Orleans March 3.

Word on the street is that she allegedly airbrushed her abs for the appearance.

What do you think?