Olivia Culpo made sure to pack plenty of bikinis for her Jackson Hole getaway with NFL superstar Christian McCaffrey ... throwing on a tiny two-piece for a dip in the hot tub -- and the pics are outrageous.
The model and Carolina Panthers running back have been heating up Wyoming this week ... and they've been documenting their romantic trip all over Instagram.
29-year-old OC proved she's able to withstand the freezing temps on Thursday ... by doing an impromptu photoshoot out in the cold while soaking in the jacuzzi.