Snap! | Julia Stegner for Roberto Cavalli’s 40th Anniversary Book Roberto Cavalli’s 40th anniversary book features Julia Stegner (and other top models) photographed by Mert & Marcus in a 200 plus page fashion story. Sounds like a must have for any fashion lover. October 9, 2010 2010, Julia Stegner, Mert & Marcus, Roberto Cavalli, Snap! 2010, Julia Stegner, Mert & Marcus, Roberto Cavalli, snap!