Student Violet Burkhart was sent home because her dress was too short, so her mum decided to give the school a dose of their own medicine and wore it to her daughter's graduation. Courtesy: Fox8

A US high school student, sent home over a short dress, may have the coolest mother in the world. What did she do at at graduation?

Central Davidson High School senior Violet Burkhart was kicked out on her last day of school because teachers deemed her dress too short, even though she’d worn it to school five times before.

Violet’s awesome mother Amy Redwine decided to give the school a dose of their own medicine.

“My daughter was pulled from class and sent home, on her last day of school early, her senior year of high school for wearing this dress. She had worn it at least five times this year without a word said to her. I have my Harper Valley PTA outfit for her graduation. What do you think Violet Burkhart?” she wrote on Facebook.

Redwine told ivillage.ca that “Violet had said, ‘I wish you would put on that dress and come up here and tell them off.’ Well I was at work and I said ‘Violet just go home!”

That's when she took her very first selfie (above).

Last week, she put on the sundress the school had said was a half-inch shorter than the dress code allowed, and went to see her daughter receive her high school diploma.

“I never ever wear dresses, so it’s a super big deal to Violet to let her know I got her back.”

Now that’s an awesome mum.