In general, always make sure your suit jacket/sportcoat covers your butt. These peacocks wearing DB blazers that barely make it past the waistline look ridiculous. Another tip to make sure that the length is correct is to have your arms hang by your side and make sure you can easily grab the bottom of your jacket. This is a general rule and I understand that sartorial rules are meant to be broken. But you have to learn the rules before you can break them. CC: @Phishdastream
Completely agree with you. J. Press would never let out of the shop with an ill-fitting sport jacket or suit.