Britney Spears beat the heat in Calabasas, CA, yesterday by picking up a Frappuccino from Starbucks in her short shorts, socks, and tank top. She wasn't decked out in pieces from her Candie's line, despite her enthusiasm at its arriving in Kohl's stores yesterday. Britney did indulge in some retail therapy this week, though, with a stop to buy lingerie at the boutique Only Hearts. She's looking forward to the long Fourth of July weekend with her boys, Sean and Jayden, but she has another cause for celebration after being ranked the sixth most powerful celebrity on Forbes's 2010 list.

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