Mariah Carey is in Japan on Halloween, but that did not stop her from dressing up for the holiday with her boy toy Bryan Tanaka. The two of them went as a sexy nurse and hunky doctor. Which is a good thing because they will cause a lot of hearts to skip a beat. Since you are what you dress as for Halloween on Halloween and that makes them medical professionals for the day. Right? I know I dress as the b-word that rhymes with witch and that means I do not have to dress up.