Samantha Ronson and Lindsay Lohan will reportedly be on their best behaviour when they attend a ball for Barack Obama next week.

Ronson is DJing at the Neighbourhood Inaugural Ball- one of the many parties taking place in Washington to welcome the new president.

The Mirror claims that party planners are worried the couple will cause trouble because of their recent fights in public.

A source told the tabloid: "This is a massive gig for the pair of them and they realise it But Lindsay will be on her best behaviour - she and Sam are both huge supporters of Obama so they wouldn't want to ruin the evening."

Thank god! We wouldnt want the Mean Girls actress and her DJ girlfriend to spoil Obamas first day in his new job.

Mariah Carey will also play the event.