If you want to dress preppy in the office, you're in luck, because many current fashion trends fall under the preppy umbrella. If your eyesight isn't great, don't worry -- glasses are not only a staple of the prep, but they're back in style and perfect for the office. Because the "nerd chic" look is hot right now, more and more people are ditching their contact lenses for preppy specs.
Depending on how dressy your office is, you can also mix up your preppy look with seperates. Tweed blazers and plaid or khaki skirts can both be preppy and appropriate for the workplace. Pairing a traditional blazer with a crisp white Oxford shirt, well-fitting ankle length jeans and heels can also dress up the prep some.
Plaid, tweed, khaki and seersucker are all materials that can come into play for the overall look of your preppy professional style. You can find slacks, skirts, dresses and tops in these classic preppy materials for mixing and matching with your more typical professional look. Sweaters can be worn with any number of combinations. Pair a pastel crew neck sweater with a traditional blazer if you need to dress it up a bit. Madras plaid and Capri pants are other preppy holdovers that have never quite gone out of style, though they're probably more appropriate for casual Fridays or work functions.