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Lindsay Lohan and girlfriend Samantha Ronson are reportedly set to marry. The 'Mean Girls' actress - who only recently confirmed she was in a same-sex relationship with DJ Samantha - is planning to exchange vows with her lover at a private ceremony in Los Angeles later this year, and her mother Dina has already started planning a lavish party.

A source said: "They've been keeping the relationship quiet for months and trying to pass each other off as 'just good friends'. "But they've decided it isn't a fling, it's for life - so they want to make their romance public.

Dina is still working on the date of the party but it's looking like towards the end of the year." It is believed the nuptials could take place in November around the same time Lindsay releases her new album 'Spirit In The Dark'.

The 22-year-old star has already bought a white Chanel mini-dress for the ceremony, while Samantha - the sister of super-producer Mark Ronson - is toying with the idea of wearing a black suit and top hat. Friends and relatives will attend the special day, with Dina determined to make the event the perfect way to "welcome Sam into the family". Meanwhile, Lindsay blasted a Los Angeles police chief who joked she had "gone gay" last week.

She said: "Police chiefs shouldn't get involved in everyone else's business when it comes to their personal life. It's inappropriate." Chief William Bratton made the remark as he explained why he did not support new rules to curb paparazzi in Los Angeles.

He said: "If you notice, since Britney started wearing clothes and behaving, Paris is out of town not bothering anybody - thank God - and evidently, Lindsay Lohan has gone gay, we don't seem to have much of an issue."