The supermodel, who battled anorexia in her younger years and became a successful plus-sized model and eating disorder activist, is featured in the 2012 Sports Illustrated Swimsuit Edition revealing her shockingly fat-free figure in a variety of skimpy swimsuits and RadarOnline.com has a video of the 25-year-old stripped down and showing off her weight loss.
Renn, who even penned a book about her eating disorder called Hungry: A Young Model's Story of Appetite, Ambition and the Ultimate Embrace of Curves, has been losing weight rapidly in the past few years, which hasn't gone over well in the plus size community.
"It is common for people with eating disorders to have periods of relapse. This can be caused by numerous factors but most common are emotional issues," psychotherapist Jessica Aronson, who has not worked with the model, told RadarOnline.com in an exclusive interview.
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