Luana grabs her sparkly blue dress with one hand and spins, using her other hand as a guide while a strand of tulle floats around her body.

The 8-year-old has long brown curls, gold butterfly earrings and an amulet with a princess hanging from her neck.

Luana had to fight to be a girl. She was born a boy, and struggled with a world that insisted that was what she must be. Then, in 2013, she became the youngest person to take advantage of an Argentine law that allows people to identify their own gender for legal purposes.