Chantelle Winnie Young-Brown, better known as Winnie Harlow, was diagnosed with a skin condition called vitiligo when she was just four years old.

Vitiligo causes melanin-producing cells to malfunction, and the result is typically a patchy appearance that’s more noticeable on darker skin tones. It isn’t contagious or deadly, but the most devastating side effects of the disease are psychological, since those who suffer from vitiligo are often bullied for things that are beyond their control.

And that was certainly the case for Harlow, who was constantly taunted by her peers for the way she looked. You can imagine their surprise when the gorgeous, talented woman effectively took over the modeling industry.