As card-carrying members of Frugalistas Anonymous, we proudly savvy shoppers are always on the lookout for a good deal. But just because a weekly special on tank tops draws us into an Old Navy store doesn’t mean we can make our way back out again without also picking up some full-price cardigans and yoga pants. Doh! Even the most experienced shoppers can fall into this trap. In case you didn’t know, retailers are also a pretty savvy bunch, and boy, do they have our number. But with a few simple tips under your belt, you should be able to spot the best deals, stop yourself from overspending, and become the money-saving guru your friends all turn to for advice. Here are just a few guidelines to ensure that you don’t spend a dime more than is necessary while still nabbing the wardrobe and accessories that make you the envy of your office or social circle.