Clothing dimensions should be larger than the nude measurements for your comfort. For inners such as T-shirts, a smaller amount of ease is necessary. For outer like jackets, we need more ease to wrap it over all the clothing layers. You may leave some measurement that is only needed for specific outfits. Make sure you measure carefully and double check with it. It is a good idea to have someone else measure you. Please keep in mind that you should be wearing normal clothes or undergarments. Jeans and heavy blouses are not recommended while being measured. Lay the tape measure flat against the skin; don't pull it too tight, nor let it droop.