The Weekend's Must-See Snaps!
Britney Spears was in a celebratory mood on Saturday, flashing her megawatt smile at a party commemorating the first anniversary of her "Piece of Me" concert residency in Las Vegas. The singer rounded out her exciting year with her dancers, who surrounded an elaborate cake presented by Planet Hollywood. In other fun moments, couples like Gwen Stefani and Gavin Rossdale and Emma Stone and Andrew Garfield gave us a dose of holiday romance, while ladies Mariah Carey, Goldie Hawn, and Melanie Griffith brought classic glamour to a Winter wonderland. Read on to see all that and more, and then see how the stars celebrated Christmas.