Celebrities got social this week on- and off-line. Rachel Zoe and Rodger Berman showed their support for the Bill Clinton Foundation, while Katherine Heigl and Josh Kelley kissed at an event for women in Hollywood. Britney Spears gave a thrilling performance to her Swedish fans, and Usher horsed around — click through to see all the pics, and don't forget to follow PopSugar on Twitter for exciting news and photos!
Rachel Zoe, Britney Spears, Usher, and More in This Week's Fun and Funny Celebrity Twitter Pictures!
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