its probably hot mostly where the latex is right up against the body... looks like there is plenty of room for ventilation and air movement that would provide some cooling... well... and probably a bit of whistling in a high wind... kinda like when you blow across a the top of a pop bottle... the whole um... girl skydiving naked effect...
Hate to piss all over the fantasy, but the parts that aren't "ventilated" don't get hot so much as slimy. Wearing latex and PVC is not as sexy feeling as it is sexy looking.