Lindsay Lohan and 'best friend' Samantha Ronson were caught kissing in Cannes last night!

The former Mean Girls star and best friend Samantha, sister of producer Mark Ronson, have been linked to each other for a number of weeks but have denied claims they're a couple.

The pair were caught while partying at one of P Diddy's infamous parties in Cannes!

The couple were said to have lost all inhibitions as they cavorted on the top deck of P Diddys party yacht.

Sources reveal that they didn't seem to care who was watching and later left the party hand in hand for their hotel.

Their open display of affection could confirm the rumours that started last year about their relationship...

But let's not forget that Samantha is one of Lindsay's party scene friends!!

If Lindsay wants to stay clean perhaps she should steer clear of her old ways!!