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The Fitness Marshall Britney Spears "My Only Wish This Year"

Wish Britney Spears a Happy Birthday (and Holiday) With The Fitness Marshall

Merry Britmas, y'all! It was the queen of pop's 36th birthday recently, so The Fitness Marshall decided to celebrate in style (and in the holiday spirit, of course) with this total Christmas throwback (and, honestly, one of Britney's best songs). This is sure to get you in the spirit, feeling good, and sweating profusely.

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