Britney Spears' Good Morning America Circus video show's that Britney Spears is back. She also showed off those abs and belly button just like I wanted her to. Heh. The song does nothing for me, but Britney looks hot while she's lip synching, so it works. All hail, y'all!

And, so cute! Here's a video of celebrities wishing Britney Spears a happy birthday as a circus-themed birthday cake was brought out. Awwww.