Battle of the Day

Irina Shayk vs Kate Upton

Irina Shayk

Kate Upton

47%

53%

Irina Shayk is a Russian model that graced the Cover of the 2011 Sports Illustrated Swimsuit Edition recently visited Cannes wearing a most revealing gown.

Kate Upton, America's current sweetheart, replaced Irina as the cover model for SI in 2012 and 2013, consecutive covers had not been accomplished by a model since Tyra Banks in 1996 - 1997.

It was a bit challenging finding a picture of Kate not wearing a bikini and donning an outfit similar to Irina, but which SI Cover model do you think has the best side boob?