An American boy with lesbian parents is taking hormone blocking treatment to stop him going through puberty as a boy as part of his quest to become a girl.
Thomas Lobel, who calls himself Tammy, wears dresses and lives as a girl.
His lesbian mothers, who adopted him when he was two, have been criticised but say the decision is his.
The Daily Mail reported that Thomas' parents, Pauline Moreno and Debra Lobel, say he he is now much happier.
Thomas liked to read Wonder Woman comic books and play with dolls.
By the age of seven, after threatening genital mutilation on himself, he was diagnosed with gender identity disorder.
"As soon as we let him put on a dress, his personality changed from a very sad kid who sat still, didn't do much of anything to a very happy little girl who was thrilled to be alive," Pauline told CNN.
Thomas has now started taking the hormone-blocking drugs.
The hormone-suppressant will postpone the 11-year-old developing broad shoulders, deep voice and facial hair.The diagnosis has been hard to accept for Tammy's parents, but they insist their sexuality has nothing to do with it.