Brie Bella vs. Nikki Bella: photos | WWE

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The "fearless" Nikki Bella is ready to take on her sister in Divas action.

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Brie and Nikki will face off for the first time in a singles match.

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The sisters stare down as the stipulation for their match is announced.

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The loser of the match must be her sister's personal assistant for 30 days, or quit WWE!

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The twins viciously tear at each other's hair.

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"Brie Mode" is in effect!

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Nikki punishes her sister, determined to make her "Cinder-Bella."

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Brie goes on the attack with dropkicks.

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Nikki tries to put her sister away with a Rack Attack, but her first attempt fails.

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Brie counters by trapping her sister in the "Yes!" Lock, a move made famous by her husband, Daniel Bryan.

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Nikki breaks the hold by reaching the ropes.

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After a successful second Rack Attack, Nikki celebrates her victory.

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What will happen to Brie as she's forced to be Nikki's assistant for the next 30 days?!