In this Sept. 29, 2015 photo, Luana poses for a picture at her home in Merlo, Argentina. Luana had to fight to be a girl. The 8-year-old was born a boy, and struggled with a world that insisted that this was what she must be. Then, in 2013, she became the youngest person to take advantage of a progressive Argentine law that allows people to identify their own gender for legal purposes. (AP Photo/Natacha Pisarenko)

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