Model Ashley Graham is the most successful plus-sized model in the game right now, bringing a message of body positivity to millions of people and positive publicity to any brand she's associated with—which now includes Sports Illustrated, as they've made Graham an official "rookie" Swimsuit Issue model. 

Although this is Graham's first official year as a Swimsuit Issue "rookie," she did appear in the magazine last year in an ad, as well as this sexy video, both of which landed SI massive publicity even though she wasn't officially a model.