Like many people in the public eye, Gigi Hadid has received a lot of criticism about her looks.
She either gets complaints about being too skinny or not being skinny enough - both of which are disgraceful comments to make no matter WHO you are.
In light of these comments, Gigi Hadid has revealed that she has been battling a disease for years that affects her metabolism.
"My metabolism actually changed like crazy this year. I have Hashimoto's disease. It's a thyroid disease," she told ELLE.
"It's now been two years since taking the medication for it, so for the VS show [in 2016] I didn't want to lose any more weight, I just want to have muscles in the right place, and if my butt can get a little perkier, then that's good," she added.
So let this be a lesson to all those awful, awful trolls who criticise people for the weight.
You never know what another person is going through and what's more, it's none of your damn business!