Twirl Skirt Is It So Awful To Buy A Dress For A Little Boy?

Is it so awful to buy a dress for a little boy? - twirl skirt

My 4-year-old son has long hair and very pretty. Just for fun, I bought a dress with a pleated full skirt. She may turn around and say that she was a princess, but she is actually quite a man. My husband is angry and says he should not be made. What do you think? Is this a problem?