A Japanese Phrase for Asking whether you may try something on: "試着してもいいですか？"

"試着してもいいですか？" means "May I try this on?" and it's the basic Japanese expression used for asking whether you may try something on. It's very handy when shopping for clothes and shoes. To answer, you can say something like "はい、試着室はあちらです。" (Yes, the fitting room is over there). You can keep the conversation going by reacting with something like "ありがとうございます。" (Thank you).