Lindsay Lohan went from something close to her natural red hair color to platinum blonde the other day in a marathon salon session that lasted a reported 11 hours. She emerged with nearly waist length blonde locks, partly covered by a fedora at Byron and Tracey Hair Salon in Beverly Hills around 11:30 at night. Lohan’s Twitter account states that the new hair is for a movie role, and the movie is presumed to be Dare to Love Me, which goes into production soon.

Lohan was later spotted in tiny shorts and sunglasses hitting the shops with her on-again off-again girlfriend Samantha Ronson.

In other Lohan news, Lindsay has dismissed reports saying she owes the fancy Chateau Marmont $37,500 in unpaid bills from a stay there in with Ronson earlier this year. The fancy hotel has been Lohan’s crash pad of choice for several years. In a 2006 Vanity Fair article, she is described as an adult version of the children’s book character “Eloise,” getting cake from the kitchen, and generally treating it like it was her own house.

Lohan’s spokesperson denied the claim that she owes Chateau Marmont money, attributing the story to a jilted friend who enjoyed feeding rumors to the British tabloids.