For cotton dress shirts, I wear a 15.5" neck and 34" sleeve. Â Most of the dress shirts I have in that size have shrunk to an unwearable size (14.75" neck in many cases) due to repeated machine washings and dryings. Â I have three questions: 1. What is the general rule of thumb with regard to how many fingers you should be able to slip between your neck and the collar of an unwashed dress shirt? Â I have always thought it was two fingers. 2. Do you machine wash and dry your dress shirts repeatedly, machine wash and dry only the first time, or hand wash and air dry from the beginning? 3. For anyone who wears a 34" sleeve, does the "L" length sleeve fit you after a machine washing or do you get the sleeve shortened? Â It seems just a tad long on me.