The singer and her husband Carey Hart were praised for allowing their daughter to express herself freely.
"Loving my punk rock daughter. Remember everyone, fly your own flag," he captioned a photo on Instagram showing Willow's hair being cut in a salon. "There is no box to be put in. It's better to be your own self. Own it, and love it. And if anyone has a problem with it, tell them (politely) to move on. Can't wait to see the woman you grow up to be. I have a feeling you are gonna be strong, fierce, companionate, and caring. I’m so proud of you, Willow."
Thousands of people commented on the photo saying they were proud the youngster was taking after her mummy.
"Complete badass like her parents 🔥❤️🤗 May you never lose that bravery, Willow!" one kind user commented.
"Thank you for being great parents to those kids despite what the haters say," another added. "That's awesome! She is an amazing kid. And congrats for raising them both with strong values and love. Keep on loving yourself and living your truth sweet girl!"
Another wrote: "I wish i was brave enough to do this. She looks so much like momma here! Way to go, Willow!"