Chrishell Stause is probably making Khloe Kardashian jealous on her latest tropical getaway … because she’s hanging out on a beach in Mexico with Chris Appleton, and he looks like a total stud.

The “Selling Sunset” star and the celebrity hairstylist linked up in Puerto Vallarta for some fun in the sun … playing around in the sand and looking super hot.

Chrishell hopped on Chris’ back for some piggyback action … and he looks absolutely ripped.

Chris even grabbed a football at one point, and it looks like he did a little bit of snorkeling too.

The duo laughed and smiled … and Chris helped Chrishell climb onto a massive rock, and held her hand as they played in the waves.

Khloe’s definitely going to be liking these photos … and probably wishing she was in Chrishell’s shoes … or should we say sandals.

As we reported … Khloe admitted on “The Kardashians” that she has the hots for Chris and wants to bang him — even though he’s gay.