When it comes to suits, some men are very lost. Let's start with the basic guideline :: Fit is EVERYTHING. It doesn't matter how expensive your suit is, if it doesn't fit correctly it is going to look sloppy. So here are some rules to follow when you're suiting up ::
1) Fit - Your pants should be a "slimfit." This means that they shouldn't have any bulkiness or bunching excess fabric. This only gives the illusion of added weight. The shoulders should be narrow, and the waist nipped.
2) Length - Trousers should be hemmed to reach the top of a standard dress shoe. Your socks should not show, and you should not have bagginess around your ankles. This gives a sloppy, unprofessional look. Your suit jacket should come down to the first knuckle on your thumb. If your jacket is too short, you will look heavier through the middle.
3) No contrast stitching. Visible stitching on a suit is okay, as long as it is subtle and the same tone as the actual suit. Contrast stitching looks cheap!
4) Pinstripes :: If you're going for the pinstripe, choose a subtle and understated stripe. A pinstripe that is visible up close, but barely recognizable from afar is a good choice.
5) Watches :: Never pair a sporty or plastic watch with your suit. Save it for your evening run or weekend activities.
6) Don't over-accessorize. A tie bar, pocket square and lapel pin are not necessary! A rule of thumb -- choose two of the three at most.
7) Camel vs Brown :: If you have the choice between a chocolate brown and a camel / sandy tan suit, go for the tan. It will prove to be more versatile and flow between seasons more effortlessly.
8) Polka Dots :: When wearing polka dots, make sure they are big enough to be recognizable and seen, but not so big that they look goofy and cartoon-like.
So follow these guidelines the next time you're suiting up or shopping for a new suit. You can be sure you're doing it right!