By Andrew Holleran United States Olympic swimmer Natalie Coughlin is pretty used to posing in a swimsuit. After all, Coughlin, an Olympic champion for the United States, made a career out of dominating opponents inside of the swimming pool and posing on the medal stand afterwards. But Coughlin had never before posed in “Body Paint.” Sports Illustrated Swimsuit once had the legendary swimmer pose in nothing but a “Body Paint” swimsuit for the iconic magazine issue. Coughlin is one of several top athletes to pose in “Body Paint” for Sports Illustrated Swimsuit. The legendary swimmer was pretty c…