A Gentlemen's Guide to Suit Length

While the precise length of a Sport Coat or a Suit Jacket is subject to multiple schools of thought and personal preferences, a simple easy to follow rule is as follows.

"The back of your jacket should cover your seat, while the front ends at the bottom of your fly."

Now of course in these modern times there will always be exceptions to this rule, such as the option of having a sport jacket slightly shorter for the appearance of a sporty physique, but using this simple rule can make your suit or sport coat look unmistakably fitted to your person, and your person alone.