Getting properly fitting clothes can be the difference between looking sloppy and looking sharp. Primer spells out the principles of a good fit for every article of clothing.
The guides cover how close your clothes should be, where the seams and other details should lie, and how the fabric should move. While we've featured lots of similar clothing advice before, these articles offer a few interesting, additional details specifically geared towards men. In the latest guide to proper sleeve length, for example, Primer says that short sleeves should end at the middle of your bicep:
Longer sleeves look sloppy and shorter alternatives end up appearing effeminate.
Don't be worried about the sleeve falling at your mid bicep if you don't have one. Even the noodle-armed amongst us will look larger and more masculine by having the sleeves accentuate the natural size and length of your arms. Trying to hide any supposed deficiencies actually makes you look scrawnier.
Other advice, however, such as how long your sweater sleeves should be, how long your pants should be and where the seams should be on your overcoat could apply to women as well.
The Philosophy of a Good Fit [Primer]