Blac Chyna lunged at her Celebrity Boxing opponent Alysia Magen this Friday before their fight had even begun.

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.

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

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

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.'

'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.

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.