An unnamed source told website X17online that the ladies, currently three of the hottest stars around, "were watching old movies and playing board games" together.
LiLo has just finished filming her latest movie, Liz & Dick, about the romance between Elizabeth Taylor and Richard Burton, with the website claiming that Lohan arranged the sleepover with Lady G and Lana.
The source went on to add: "The three of them had dinner in the garden on Tuesday night at Chateau, and then Lindsay and GaGa ran upstairs to play dress up and came down in different outfits."
That's definitely a slumber party we'd like to be invited to.
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