Britney Spears was the radiant ringleader of her birthday Circus, and it was only fitting that the pop-princess had a stunning cake to celebrate the festivities.

The edible masterpiece fit perfectly with the party's circus theme, and the sweet treat made the night complete for the beautiful birthday girl.

Watch the video to see Barry Weiss of Jive Records present a smiling Britney with her sparkle-lit cake, and don't miss any of Britney's special celebration. Check back here on our website for all of ET's exclusive coverage!