Nick Papageorgio ... from Yuma ... is about to be single again ... TMZ has learned the wife of "Vegas Vacation" star Ethan Embry has filed for divorce.
Sunny Mabrey -- a model who once starred in Limp Bizkit's "Nookie" video -- filed documents in L.A. County Superior Court ... asking a judge to end her 7-year marriage to 34-year-old Embry.
36-year-old Sunny -- who filed the documents without a lawyer -- blamed the split on irreconcilable differences.
Sunny and Ethan have no children together.
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