The Mayweather vs. Pacquiao rivalry has taken over a hair show in Puerto Rico -- where a famous barber stole the spotlight by etching BOTH fighters onto the same dude's head!
TMZ Sports has the pics ... showing a barber named Anthony from Elegance USA carefully shaving images of Floyd and Manny onto a guy at the International Hair Show in Ponce, Puerto Rico.
Anthony is a hair portrait specialist ... he's done everything from Michael Jordan to Klay Thompson ... and even Scarface!
So, how much does it cost to get a famous dude (or lady) put on your melon? We're told he runs between $100 and $200 a pop.
For the record, we're told the guy in the chair is pulling for Manny ... but clearly, Floyd is also on his mind.
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