1. Go to a Men's Warehouse and try on a couple suits to figure out his approx size.
- Most men tend to be between a 40 and 44.
- The jacket should be snug on his shoulders and the correct length (sides can be taken in by a tailor later)
- Make sure to note R (regular) S (short) or L (long) for jacket length.
2. If your budget is really only $300-$400 then Suit Supply is probably your only good option (if in or around NYC, Chicago, or DC skip 1. and visit a Suit...