Lindsay Lohan celebrates with Ronson

Lindsay Lohan celebrated her birthday with her alleged girlfriend Samantha Ronson yesterday (02.07.08).

The 'Mean Girls' actress, who turned 22, dined at Beverly Hills' La Scala restaurant with the DJ and several other friends.

Before the meal, the pair spent the afternoon shopping in Los Angeles and browsed at shops including exclusive jewellery store Cartier. Lindsay sparked rumours she was in a lesbian relationship with Samantha - who is the sister of super producer Mark Ronson - after sending intimate messages to her over the internet last year.

Recent reports claim Lindsay plays the submissive 'wife' in the relationship. A source said: "Lindsay and Samantha are totally playing house and loving every minute of it.

And, yes, they share a bed! "They both play certain roles. Lindsay is the passive one, the wife. It works for them!"

Lindsay has recently been busy on the set of her latest movie 'Labor Pains', a comedy in which she plays a woman who pretends to be pregnant in order to prevent her boss from firing her.