You do not need to take everything off. You can leave your underwear on, except for bras with metal underwire in the case of female patients.
You have to wear a blue paper gown that fastens at the back, shoe covers/booties over your socks and a white cap on your head to hold your hair out of the way. It is also recommended that you leave any jewellery (especially if an electric scalpel is to be used) and hearing aids with your escort or in the changing room locker, although we assess whether to leave one hearing aid in if your hearing is very poor without them.