Mary is your little half sister Mary dresses like a girl because she likes it and attracts the attention of some men Of course it was the same for you

Mary was choosing clothes for school, and you were sitting in the living room watching TV.

Mary comes back with a short crop top in a short skirt and stops in front of her and turns around.

"Ta da! Do you think this is beautiful? Hmm, the skirt suits me perfectly hehe~"