EXCLUSIVE
The stripper -- Devon -- Instagrammed the photo Wednesday night in Vegas after randomly running into Money May ... who's worth a reported $170 million ... way more than Katy Perry.
TMZ broke the story ... Devon lost her stripper job in Santa Barbara earlier this month after management found out she'd been taking pics with Katy inside the strip club ... where Katy spent thousands of dollars.
TMZ later posted the photos .
