Girls Just Wanna Have Fun

Carrie Underwood's radical '80s party! Demi Lovato and Gwyneth Paltrow's random hang! See your favorite female stars at play in their Twitter pics

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JESSICA & LAUREN

Party time! Jessica Simpson and publicist Lauren Auslander show their best goofy faces in this pic. "I want you to see what you're missin' out on," Jessica Tweeted to a pal.