Lindsay Lohan -- Unpaid Hotel Bill ... Not My Problem

Lindsay Lohan's passing the buck -- telling friends she thought the producers behind her recent Liz Taylor movie were going to pay her $46,350 hotel bill ... which is why she never offered to cover the tab.

Sources close to the actress tell TMZ, Lindsay claims producers agreed to cover her stay at L.A.'s Chateau Marmont while she filmed "Liz & Dick" earlier this summer -- so she was shocked to learn there was an outstanding 5-figure bill in her name ... and even more shocked when she was banned from the hotel when the bill went unpaid.

We're told Lindsay is currently trying to sort the problem out with producers -- and if they refuse to pay, Lindsay will happily cover the tab.