We would like to share some little tips on wearing suit with you.
1) Never button up the last jacket button when standing
Though there are 2 buttons on your suit jacket (old style may have 3 buttons), you will not close the second (last) button. You only need to close the first button.
2) Unbutton the suit when sitting
When you sit down, unbutton the suit jacket, some the chest area will not be bursting out.
3) Shirt and jacket sleeves length
The shirt sleeve should be longer than the jacket sleeves for around 1/2 inch, it creates a better look for able to see the shirt cuffs or cuff-links.
4) Shirt is too transparent?
Cotton shirts, especially for light color, is quite transparent. Choose a V-neck t-shirt as your undershirt if you do not wear a tie
5) Socks color
Nowadays people do not like heavy break on the pants i.e. prefer relatively short length of pants. Therefore whenever you sit, your ankle will be shown.
So, put on dark color socks or socks in same/ similar color to the pants/ shoes. You may choose some playful / colorful pattern too but with dark color background.