Watch the exclusive behind the scenes video from the SI Swimsuit 2015 shoot in Kauai, featuring Gigi Hadid, Irina Shayk, Emily DiDonato, Emily Ratajkowski and Hailey Clauson Subscribe to SI Swimsuit s channel: Watch more SI Swimsuit videos at Facebook: Twitter: G+: Reddit: Watch all the 2014 SI Swimsuit videos, click he