Mischa Barton and Silvstedt's 'bitchfest' at Cannes film fest!

Actresses/models Mischa Barton and Victoria Silvstedt had a vocal slugfest at De Grisogono party which left ‘The O.C.’ actress red-faced.

According to a source the pals fell out due to Silvstedt’s ‘whining’, as the two argued about giving company to each other.

"Mischa was fed up of Victoria's whining and was telling her to move on. But Victoria completely lost it,” the Mirror quoted the source, as saying.

Silvstedt yelled at Barton, complaining that she is ignoring her.

"Where the hell are you going now? Why do you keep walking away from me?” Silvstedt said.

Barton shouted back at the Swedish model saying that their intentions were different, so there was no need to keep sticking to each other all the time.

"We're not even going in the same direction. We're not going to the same place,” Barton said.

This was not the end, for as Barton was about to leave the party at the Hotel du Cap's Eden Roc nightclub, the former Playboy Playmate confronted her and abused her.

“There goes the b****! There goes the b****!' It was highly embarrassing,” the source quoted Silvstedt, as saying.

This was not the only incident that left the 21-year-old red-faced, as earlier this week she was embarrassed when she fell out of her top while leaving a London nightclub.