Lindsay Lohan Gatecrasher claims that Lindsay, who hasn't had a film out since the indie flop, I Know Who Killed Me, sustains her expensive shopping habit by spending all of Samantha's money!

Like most girls, Lilo loves to shop, but "Lindsay is spending like crazy!” a friend tells the paper. “She’s living on credit right now. She has no cash. The problem is, the money being spent is mostly Sam’s because Lindsay doesn’t really have any of her own at the moment; she’s really taken on the ‘man’ role in their romance. Sam really thinks Lindsay needs to learn how to become a recessionista and manage her money better.”

But isn't Lindsay making money off that stunning Fornarina campaign?

"For every dollar she makes, she spends double," says the pal. "Her personal appearance fees are literally the only thing keeping her afloat. But here's the rub: Because of her explosive relationship with Sam, she’s unable to get the type of cash she's used to. The negative press and constant appearance cancellations are hurting her pocketbook.”

Is that why this weekend Lilo decided to shop at a secondhand store (vid below) instead of Barneys?