Unless your goal in going to B-school is to become the maitre d’ at Freeman’s, it’s probably a good idea to get a real haircut and practice some oral hygiene prior to your next recruiting session. Such was the advice some totally uptight administrator found it necessary to offer a bunch of Columbia Business School first-years lately. (Also: ditch the tacky cufflinks!) Now Esquire‘s ever-insightful Josh Peskowitz has added his own list of grad school style rules to the mix. Check them out here, and while you’re at it, take a peek at our guide to How To Dress for a Job Interview. (Note: tooth-brushing advice not included.)