It turns out that the process of painting a bikini onto Kate Upton isn't quite as sexy as we imagined here at Skin Central (unless you have a thing for surgical masks, in which case it will BLOW YOUR MIND). Some behind-the-scenes pics of Kate getting the body painting treatment have been released, providing a fascinating perspective on all the hard work (and spraypaint) that goes into the perennial spank mag favorite. Still, we'd give our signed copy of Caligula to be one of the hands in this picture. More after the jump!