Groom and sons all wore the same suit, different sizes. The only one that didn't need alteration was the tallest of the 3 who stands at 5'10". The other two needed sleeves and pant length shortened.I ordered based on the chart but had to go up one size for everyone. Both boys needed the largest size available. And I had a seamstress remove the hanky that was presewn in the pocket and replace with the matching one to their vest and tie.