Hot Brazilian Model -- I'm Just As Dirty As Bar Refaeli

Apparently, Bar Refaeli has started a trend ... because just a few weeks after the Israeli model dipped herself in mud at the famous Dead Sea ... some smokin' hot Brazilian model tried to show her up.

Model Suelyn Medeiros (left) -- whose butt you may recognize from the SEXIEST DUI EVER -- mucked around in Israel this week ... and fortunately for the rest of the world, she brought along a bathing suit and a camera.

So we gotta ask ...