Jen Selter brings out the thirst in all of us -- which is fitting ... 'cause it looks like she's a little thirsty herself.
The famous fitness model was seen poolside in Miami drinking from what appears to be some sort of fancy drink from a giant wine glass -- with lots of straws to suck from.
BTW -- she's known for her great assets. As far as we can tell, though, she's also got some solid slurping skills to display. Drink up, fellas!