SLIDES: Britney Spears

<div class="meta image-caption"><div class="origin-logo origin-image none"><span>none</span></div><span class="caption-text">Singer Britney Spears performs on ABC&#39;s &#34;Good Morning America&#34; show at the Big Apple Circus in New York on Tuesday, Dec. 2, 2008.</span></div>
December 2, 2008 11:22:46 AM PST
Britney Spears celebrated her 27th birthday on GMA this morning. See pictures from the performance on!Click here for photos of Britney Spears over the years.