With the Monday-through-Friday grind behind them, our favorite celebrities are getting social and active around the globe. Naomi Campbell kicked off her Friday night with Sharon Stone and Mary J. Blige at amfAR's glitzy Inspiration Gala in São Paulo, Brazil. In NYC, Sarah Jessica Parker dazzled at the 2014 DVF Awards, Pharrell Williams jumped into his 41st year with a star-studded birthday bash, and Lady Gaga donned yet another big wig as she took center stage. Elsewhere, Naomi Watts scored some exercise and fresh air on a lovely LA day, and Chelsea Handler fit in with tourists in the Sunshine State. Scroll through to see all the exciting weekend fun unfold, and come back later to find out what the stars do next!