Rowan Blanchard, 15
You Might Know Her From: The show Girl Meets World.
Her Claim to Fame: Her presence on social media where she's a self-proclaimed feminist and fashion girl (if you can't already tell by her outfits). Oh, and Rowan's definition of a feminist? "Undoing patriarchal structures against marginalized people — structures that fight against people of color, that fight against women, that fight against disabled people, that fight against LGBTQ," she said.