Clothing size is an important factor to consider when shopping for clothes. PETITE is a size typically used for women who are 5'4' and under, and is usually denoted by the letter 'P'. LARGE is a size typically used for women who are 5'5' and above, and is usually denoted by the letter 'L'. Juniormiss is a size typically used for young women between the ages of 13 and 17, and is usually denoted by the letters 'JM'.