Blac Chyna LUNGES at Celebrity Boxing opponent Alysia Magen BEFORE their fight because influencer roasted her with Kardashian joke

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They are slated to face off in the ring Saturday night, and the day before their match they featured at a weigh-in event where they roasted one another.

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However Chyna, 34, evidently saw little humor in the situation when Alysia, a fitness model and influencer, made a joke about the Kardashians.

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Chyna shares her daughter Dream, five, with Rob Kardashian and recently lost a messy high-profile legal battle against his family.

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While she and Alysia were engaged in typical boxer trash-talk this Saturday, Chyna vamped that Alysia's Instagram rap about the fight was 'trash.'

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'Hey, I'm not Kim Kardashian, I'm gonna knock you both out,' said Alysia - prompting Chyna to leap towards her apparently about to hit her.

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The other people at the event had to wrench Chyna away from Alysia and hold the two women apart, as someone behind the camera whooped.

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