EXCLUSIVE

Former "Real Housewives of OC" star Lynne Curtin is broke ... broke ass broke ... claiming she only has $100 to her name, this according to legal docs obtained by TMZ.

Curtin just filed new court papers in her divorce from Frank Curtin -- and it seems like she's making a serious play for spousal support, 'cause she claims to have virtually no money left.

According to the docs, Curtin says she only has $100 in total assets. She also claims she only earns $250 dollars a month -- or $3,000 a year -- as the owner of her own jewelry business.

Just for comparison, the poverty level for a single person in the U.S. is $11,490 a year.

As for her expenses, Curtin claims she lives a pretty meager life these days, dropping only $515 per month. Here's how the monthly spending breaks down:

$150 - eating out

$115 - telephone and email

$ 50 - laundry

$100 - clothes

$100 - entertainment

We broke the story, Curtin -- who appeared in seasons 4 & 5 of the show -- filed for divorce from her husband Frank back in December.

In her court papers, Lynne says she had to get a loan just to pay her lawyer. Also ...there's the little matter of $30,000 in unpaid taxes from 2009 ... she says that's Frank's problem, too.