1) Simple is best... white t-shirt and blue jeans. 2) Different material for different function... athletic/casual/business/formal. 3) Clothing's aim is to hides your flaws, compliment and accentuate your strengths.... size of lapel depends on body shape/height. 4) Fit is more important than material. (Army dress uniform is not good in material, but it is the where suits originated from.) 5) You wear the cloth, the not the clothing wearing you... your own sense of who you are and level of confidence matters more than the brand.