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    The 5 Best "California Gurls" Mashups

    "Back to California Gurls" = The new "Party & Bullshit In The USA."

    Mathieu S.
    by Mathieu S.

    Community Contributor

    • 1. Back to California Gurls

    • 2. Ke$ha vs Katy Perry vs Justin Bieber

    • 3. Katy Perry vs. Kylie Minogue

    • 4. Britney Spears vs. Katy Perry

    • 5. Katy Perry vs Black Eyed Peas

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