Article continues below advertisementSI Swimsuit star Kate Upton looks nearly unrecognizable in throwback bikini photos from her debut 14 years ago."When you think SI Swimsuit, you think Kate Upton," the outlet wrote alongside side-by-side photos of the model on November 9. "From her debut 2011 photo shoot to her most recent appearance in the fold for the 60th anniversary issue, Upton is the definition of a SI Swimsuit 'Legend.'"Article continues below advertisementKate Upton Graced SI's 60th Anniversary IssueSource: MEGAKate Upton first graced the cover of 'Sport's Illustrated' in 2011.