Celebrity Social Media Pictures | Week of Feb. 24, 2014

Why So Serious? See How the Stars Are Having Fashion Fun on Instagram

Why So Serious? See How the Stars Are Having Fashion Fun on Instagram

Who says dressing up has to be a highbrow activity? This week the stars were all about keeping fashion fun. While Rihanna wasn't afraid to take a spill in skis, Lupita Nyong'o spread her wings with a butterfly headpiece.

After all, though great style is serious business, it's nice to see Hollywood still has a sense of humor. See this week's best photos, and don't forget to share the love and follow POPSUGAR Fashion on Instagram, Facebook, and Twitter!

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