With due respect to all other upper body garments for men, the shirt should seem to be the most decent. At the same time, it looks classy as well from all angles. It does not matter whether you are slim or fat. The shirt would always look great on you. You would not be able to say the same about the T-shirts and the Polo shirts. This reason should substantiate the utility of the plain shirt as the classiest garment for men. The beauty of the shirts is that you can wear them outside as well as tuck them inside your pants. It would not make much of a difference to your appearance. When you use the shirt normally, you would button it down to the last button. This is the accepted norm all over the world.
Of course, many people refrain from buttoning down to the last button. They like to leave the last button unfastened. This is a style statement of its own. However, you get the classy look when you button down your shirts to the last button. When we use the word last button, we refer to the sleeves as well. The buttoned down sleeve would automatically impart a feeling of class and decency. It is not that the half-sleeve shirts are not decent or anything of that sort. The buttoned down look gives the feeling that the person would be a serious one. However, you find the causal shirts too having such sleeves today. The trick is in adjusting your look to every kind of shirt. You can button down your sleeve and look formal in your office wear. At the same time, you can do so in the casual wear as well.
You may not find the young student generation using the button down shirts. They like to experiment a great deal. However, as one grows older, it dawns on him that the buttoned down look looks great in every way as well. In fact, if one wears a full-sleeved shirt, he should button it down. Leaving the flap of the sleeve open can interfere with his working. It can come in the way thereby causing a lot of discomforts as well. Therefore, the buttoned down style is great from the comfort and the convenience angle. You can convert the casual look into a serious or a formal look by buttoning down the causal full-sleeved shirt.