The Sun report that Sam lunged at Lindsay "throwing punches" when she saw her dancing with spunky ex Calum Best.
Sam was restrained, but then Lindsay had to be held back as she ran at Sam, "sreaming and spitting".
“Lindsay was having a boogie on the dance floor with Calum," a source told The Sun.
“They were getting pretty close to each other and Sam was nowhere to be seen.
“And then all hell broke loose. Sam came screeching up to Lindsay, screaming blue murder and throwing punches. She went ballistic.
“The pair traded a series of blows before Calum managed to prise them apart. It was a really ugly scene.”
It wasn't over then, either, Lilo was still pretty peed off at Sam, and had another go at her as they left the club.
“Lindsay was furious with what Sam had done," said the source. "She launched herself at Sam in the lobby. She was spitting at her and clawing at her chest. She was fuming.”