Ultimately, you learn to live with it. Kaji has been referred to as a she from the day he came home. I use to keep him in a puppy cut to help show he was a boy. It didn't help. He wears lots of blue, skulls, and other "boy" things and he is still referred to as a she. I gave up and went with what makes me happy. I finally let his hair grow. I love men with facial hair and my yorkie boy is no exception.
He doesn't mind the topknot either. I call it his ninja knot or his Sasha Vujacic look.
He's still very much a ladies man.
One of Kaji's bff's, Missy, is constantly being mistaken for a boy. She wears lots of pink too!