Stiles has been a girl since birth, but because girls weren't allowed to play certain sports, and she was bullied for being too masculine she puts up an illusion and changes her name. To everyone around her she looks like her fraternal twin, Stuart, who lives with her aunt in South Carolina. The only one who knows she's a girl is her best friend, Scott, who hasn't seen her female body since they were young. When Stuart shows up, Stiles is forced to dissolve her illusion and tell the pack who she really is, and what she really looks like.
Scott's best friend has always been a girl. She didn't always act like one and was bullied for it. He knew she was a witch since they were young kids, when she'd trained with her mother, and knew a simple illusion such as taking the form of her brother was a piece of cake. When he'd been turned, Stiles smelt masculine, and his wolf had refused to believe him when he said she was a girl. When Stuart came back, his wolf was a little too pleased that he was right. But Isaac seems to be getting in the way of getting what he wants.
I do not own Teen Wolf
I took this from my AO3-I own this story, I did not steal it from someone else