Former plus-size model Crystal Renn just can't seem to win the public over with her constant weight issues.

She's been criticized for being too thin (she wrote a memoir in 2009 about her struggles with anorexia) and then when she plumped up to 165 pounds, people were concerned she gained too much weight.

It’s hard to believe that Crystal Renn was ever a plus-sized model!

The 25-year-old catwalk crawler, who was formally a role model in the plus-sized model community, can’t stop losing weight! Hitting the 9th Annual Spring Dinner Dance New Year’s In April: A Fool’s Fete in New York City on Tuesday night, the newly blonde flaunted her even slimmer figure in a Zac Posen gown...

It’s hard to believe that W Korea magazine’s covergirl is former plus-sized model Crystal Renn!

The slimmed-down supermodel traded in her usually dark and dangerous look for a lighter and brighter one for the March 2012 issue of the fashion magazine, looking shockingly unrecognizable, and RadarOnline.com has the details.

Formerly fitting into a size 16, Crystal Renn is clearly not modeling plus sizes anymore!

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.

Former plus size model and anorexia survivor Crystal Renn’s dramatic weight loss has sparked outrage in the plus size community who have supported her and helped launch her career, RadarOnline.com is exclusively reporting.

“Everyone rallied around her and now she’s turned against us,” PLUS Model Magazine Editor-in-Chief Madeline Jones told RadarOnline.com in an exclusive interview. “We have been betrayed by her.”

As RadarOnline.com previously reported, the 5’9” beauty was a shadow of her former self when she walked the red carpet in a skintight scarlet Zac Posen gown at the New York premiere of Madonna’s W.E. on Monday night, prompting fears she has fallen back into bad habits.

Plus size modeling breakout Myla Dalbesio, appearing on the cover of the new Claph Magazine, admits she mistakenly thought her road to runway stardom was paved with black olives and pickles -- the foods she loaded up on in attempts to achieve a waif-ish figure that was nearly impossible with her frame.

The one-time Miss Teen Wisconsin told Fashionista.com that she had misconceptions early on in her career that she needed a rail-thin frame for success, setting her up for a brutal eating disorder.

"I tried for a long time to make myself [lose weight] ... I tried throwing up after I ate and that’s awful. That is painful: I would never wish for anyone to do that ever. And then I’d go through weeks where all I ate was black olives or pickles because they have no calories and nothing was happening.

Former plus size model and anorexia survivor Crystal Renn shocked people with her startling slim down earlier this week, and now an eating disorder expert is weighing in on her unhealthy look, RadarOnline.com can exclusively reveal.

Dressed in a skintight scarlet Zac Posen gown, Renn was a shadow of her former self when she walked the red carpet at the New York premiere of W.E. on Monday night, prompting fears she has fallen back into bad habits.

"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 star, told RadarOnline.com in an exclusive interview.

Crystal Renn, who became a plus-sized model after battling anorexia as a teenage runway model, is definitely not fitting into size 12 dresses these days!

The brunette beauty looked incredibly thin and gaunt in the face at the New York premiere of W.E. on Monday night, showing off her bony body in a scarlet red Zac Posen gown – and RadarOnline.com has the shocking photos.

PHOTOS: Crystal Renn Looks Shockingly Thing At The W.E. Premiere