In a word, “No.” You should undress to your comfort level. Any clothing left on serves as a border to your privacy. Your therapist will do her best to work around any clothes left on. However, the more clothing worn means that certain areas may receive minimal work or not be massaged at all. Most clients either wear their underwear or nothing. Boxers and panties that cover the bottom of the buttocks usually prevent work from being done on your upper hip and hamstring muscles.