In this Sept. 29, 2015 photo, Luana embraces her mother Gabriela Mansilla at home in Merlo, Argentina. Mansilla says there were always clear differences in her identical twins. Manuel, Luana’s birth name, wore shirts on his head, apparently imitating long hair. He liked dolls. Princesses and mermaids were his favorite movie characters. Among his first words: “I girl.” (AP Photo/Natacha Pisarenko)

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