Facebook/Natalie Greene

After a New Jersey woman reported she was zip-tied and slashed all over her body, with the words "Trump Whore" carved into her stomach ... authorities say she made the whole thing up, and even paid an artist to cut her skin to help sell the fabricated attack.

In court papers obtained by TMZ, federal prosecutors say the 26-year-old woman paid $500 to have a body modification artist she found on Instagram to expertly slice her up with a scalpel. Natalie Greene -- a former aide to a GOP Congressman -- is now facing charges. Gallery Launch Gallery

Greene claimed 3 armed men attacked her and a friend on July 23 at Egg Harbor Township Nature Reserve in New Jersey. She said they threatened to shoot her before striking her in the head, tying her with zip-ties, and

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