Katy Perry's Fired Stripper -- Mayweathering the Storm ... I'm on the Money Team Now

The stripper who was fired for taking photos with Katy Perry -- INSIDE A STRIP CLUB -- has moved on to bigger and richer things ... Floyd Mayweather Jr.

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.