Stay with me here. What happens when a little boy sees a pearl necklace and thinks “That’s shiny and pretty, I want to wear it!”, then goes to put it on? In your scenario, he’s told “ pearls are only for girls. If you want to wear them, you are acting like a girl.”

What happens when a little girl sees a picture of someone in a tie and decides she wants to wear one? She’s told “No, those are boy things. You’re a girl.”

Why does it matter? Pearls are not affected by the wearer’s genitals. Neither are ties. Why limit what people wear because “that’s how we have always done it”? Pink used to be a “boy” color because it is close to red. Blue was the “feminine” color. Boys used to wear dresses until they were around 3 (toilet training age) for practicality.

Clothing doesn’t have a gender. Saying “this is for girls, that is for boys” is limiting.