Showbiz
Rex Features
The DJ reportedly broke the news during her live set at the Chateau Marmont hotel in Hollywood.
"By the end of this year, my love will be Mrs Ronson," she is quoted as saying. "Tonight shows the power of a woman - to underestimate that is to underestimate the world."
The Chateau Marmont's parlour singer Raymond, who earlier performed a cover of the Beatles' 'All My Loving' for Lohan, described the pair as "the most in love Hollywood couple I've ever seen".
He added: "Every Friday night they come in here and do cheesy dancing. MC Hammer is their favourite."
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