Best of 2011

21 Best Celeb Snapshots of 2011

From Duchess Catherine's royal debut to Beyoncé's baby bump, revisit the year's picture-perfect moments

WATCH THE THRONE

After scoring another No. 1 album with Femme Fatale, Britney Spears checks out the view from the top alongside fellow pop princess Rihanna after a sexy duet of their collaboration, "S&M," at May's Billboard Music Awards in Las Vegas.