GUILDE TO SHIRT TUCK OR UNTUCK
A style war has long divided those at the office and even good friends. One simple difference of opinion. Is it tucked? Or un tucked?
No, I'm not talking about cosmetic surgery and the doing away of beer-belly fat. I'm referring to the rules governing when – and where – one should tuck in a button-down shirt, as opposed to leaving it out.
Whether for or against the tradition of shirt-tucking, the evolution of men's style proves it has good reason to stick around. So, get ready to tuck it (when you have to) and learn to master those occasions when it's OK to let it all hang out.
Breaking it down
Shirt tucking offers a more refined, polished look to even the most simple of outfits. And it's very much occasion-appropriate: tucked for corporate and formal settings and untucked for casual wear and, dress-code permitting, smart casual events.
Then, there's the shirt structure. Shirts that are made with a flat 'bottom' hem are designed to be untucked (but have the option of tucking if the occasion asks for it).
But if the shirt has visible shirttails (think the rise and fall of the hem, which is longer at the front and back of the shirt) then the design implies that the shirt must be tucked-in. Despite this, there are sometimes exceptions to rule. Let's help you out.
Tailored and tucked

Except for a random few hipster creatives who'll try anything to start a workplace trend, the shirttails of button-downs have always been (and should be) tucked into your pants. Ignore this rule, and expect to look clumsy and messy in the office; simultaneously destroying all the hard work you put into buying the perfect business suit.
Trouser separates (without a jacket) and business shirting should follow the same rule. Even those sweater-wearers, who insist on letting the tails hang out below their knit, have to be retold: it's a contrived way of looking fashionably dishevelled. And instead, feels more like a stunt a school boy might pull-out, to feel more like a rebel.
Collared shirting with 'tailored' jeans or chinos is another tucked-in option. But this time, it's not essential. If your button-down shirt falls more than 3 inches past your belt, tuck it. And, the nature of the jeans (serving as a smart casual bottom) means the shirt looks great tucked; giving off a European feel instead of looking like aSeinfield character.
click to read more
http://desynme..com/2015/08/a-style-war-has-divided-those-at-office.html

Cool