From Style Guru: Perfecting your Jacket game.

Jackets are a fashion staple. Be it classic leather jacket or casual denim jacket. Hemline is something that is often ignored but it is the most deciding factor of how your jacket will look on you. so following are a few guidelines for choosing the right  hem length.Above the waist, below the waist, hip length, knee length are a few varieties of hems available in jackets.

If you are the one who has a petite frame then the best length for you is above the waist line(on left) because anything longer than this will make you appear even shorter, also your jacket should be well clinched at the waist line for a better look. Aim for accentuating your height.  Simple details like a zipper or tussles are fine but avoid heavy hem line details like ruffles.

If you height lies on the scale of not so short yet not so tall most styles will work for you. If you appear to be a little obese the a double breasted style  with padded shoulders. is ideal for you . Ditch the fitted jacket styles it will only make you look heavier then you are.

If you are taller than most of your male friends then you must avoid adding height to your look for that you need to skip all the above waistline, below waistline, bolero style, empire waist line. The best length is above the knee or if you are very tall below knee is the best(image below ). If you are thin as stick choose for styles that have small button or zip details. Avoid the hems with fur endings. Padding are a simple no for slims

also remember to buy simple timeless pieces..