Lindsay Lohan — PURSE RETURNED … Minus $10,000

Lindsay Lohan‘s purse has made it back to its rightful owner safe and sound — passport and everything — but sources tell TMZ, the thief kept one massive jackpot … $10,000 in cash.

TMZ broke the story … Lindsay’s $5,000 Chanel purse was stolen last night from a Hawaii house party — and inside the bag … her passport, important probation docs, and a boatload of cash.

Sources tell us, Lindsay stayed long after police left — driving the entire party into a frenzy for hours looking for the purse — and up until this morning, she had come up empty.

But that’s when one of her friend’s eyed a suspicious-looking local, and asked if he knew where the bag was. We’re told the local denied everything, but showed up with the bag minutes later … claiming he found it on the street somewhere.

We’re told Lindsay was so ecstatic to have the bag back, she didn’t bother asking questions — despite the missing $10,000.

Traveler’s checks, people.