Nutritionist Majid Ali (who has not treated Ali) told RadarOnline.com, "She looks like a death camp survivor, It appears as if she is wasting away as her body chews up muscle looking for fuel."
Ali is 174cm tall, but Majid estimates her weight to be a dangerously low 40kg.
"It seems more like a starvation diet than binging and purging," he speculated.
And the extreme dieting won't do her modeling career any favours in the long run. "Malnutrition will prematurely age her," the nutritionist revealed. "It tears down tissue collagen and leads to wrinkles, poor skin, limp hair and bad nail quality."