Gigi Hadid has been battling comments from the public about her weight, but the model has silenced the haters by making a shocking revelation.
Gigi was forced to take to Twitter and respond to comments about her 'fluctuating weight'. Gigi revealed that she has been suffering from an autoimmune disorder called Hashimoto's disease.
Hashimoto's disease, also known as chronic lymphocytic thyroiditis, can lead to an underactive thyroid gland.
Taking to social media, Gigi wrote: "For those of you so determined to come up with why my body has changed over the years, you may not know that when I started @ 17 I was not yet diagnosed w/Hashimoto's disease; those of u who called me "too big for the industry" were seeing inflammation & water retention due to that.
"Over the last few years I've been properly medicated to help symptoms including those, as well as extreme fatigue, metabolism issues, body's ability to retain heat, etc ... I was also part of a holistic medical trial that helped my thyroid levels balance out.
"Although stress & excessive travel can also affect the body, I have always eaten the same, my body just handles it differently now that my health is better. I may be "too skinny" for u, honestly this skinny isn't what I want to be, but I feel healthier internally and am still learning and growing with my body everyday, as everyone is.
"I will not further explain the way my body looks, just as anyone, with a body type that doesnt suit ur "beauty" expectation, shouldnt have to. Not to judge others, but drugs are not my thing, stop putting me in that box just because u dont understand the way my body has matured.
"Please, as social media users & human beings in general, learn to have more empathy for others and know that you never really know the whole story. Use your energy to lift those that you admire rather than be cruel to those u don't."
According to the NHS, Hashimoto's thyroiditis can "take months or years" to be diagnosed and is "caused by the immune system attacking the thyroid gland, making it swell and become damaged."
This is by no means the Hadid family's first encounter with illness. Gigi's sister, Bella, and brother, Anwar, both suffer with Lyme Disease.
Get well soon, Gigi.