If you’re in business (or really in any situation where the clothes you wear must be of a certain sophistication), there are certain staples of your wardrobe that you should get if you don’t have them already. They are:

Suits (start off with gray charcoal, then get a navy, navy pinstripe, charcoal pinstripe and a khaki. Once you have these 5 basics, go ahead and get more interesting types, such as black, seersuckers, heavier wool, etc.), blazers (navy and charcoal or gray), buttondowns (white, blue, stripes), loafers, oxford lace-ups, a few sweaters, polos, and leather belts.

If you live in the northeast or somewhere cold, get some scarves, gloves, snow boots, and a couple heavier coats.

If you wear sneakers, live by this rule (as written by Glenn O’Brien of GQ): If kids would line up for it or if Turtle (from Entourage) would buy it, skip it.

Weekend wear is more relaxed and casual, but still, not sloppy. T-shirts that fit and are appropriate for someone your age (i.e. NOT anything from Tshirthell.com) are fine, as are jeans, khakis, etc.

And remember - like Trix, bagginess is for kids.

Mix and match all the pieces with accessories to work it both on the job and after hours.