Talk about her cover all you want, but around here we're more interested in 2015 Sport Illustrated swimsuit-issue cover-model Hannah Davis's facial skin. 'Cause like the rest of her, it's stunning. Behold its beauty... Caught with a lovely face of smoldering going-out makeup: At Miami Swim... Next to Wildfox CEO Jimmy Sommers... No word on the moisturizer she uses, but I have a feeling it all comes down to good genes. Lucky girl. And based on what's happened for past cover stars like Chrissy…