After 10-year-old Kheris Rogers was bullied by classmates for her darker skin and transferred to a new school to escape the taunting, her older sister Taylor Pollard stepped in to help boost the girl’s confidence.

“She started to notice she was different,” Pollard said in an interview with Buzzfeed. “She would cry a lot, and talk about how she doesn’t like her skin tone.”

Rogers told Mic she thought kids bullied her because they weren’t used to her skin tone. But, it didn’t stop with the students. “There was an incident with a teacher and we had to draw ourselves and she gave us a black crayon instead of a brown crayon, and I was really upset.”

Pollard posted pictures of Rogers on Twitter with the hashtag #FlexinInHerComplexion. The post soon went viral, getting retweeted over 30,000 times, and the compliments began to pour in.