Model Emily Sears' Butt's a Pro at Eating Bikinis

We all know Emily Sears can throw down burgers, thanks to Carl's Jr. ... but her ass is pretty good at devouring stuff too.

We got the Aussie smoke show in Santa Monica, taking a dip and soaking up the end of summer rays.

Emily famously sucked down a ton of bacon during that "Three-Way" spot.

Yeah, it's pretty clear she does good work with food.