Photo: Thinkstock

2 of 6
Create a Halo Effect
A well-tailored outfit suggests that you're conscientious and detail-oriented in other areas, says Frank Bernieri, PhD, associate professor in the psychology department at Oregon State University. So take time to make sure your clothes fit you well. For instance, the stylish skirt you see at the store might be hitting the 5'8" mannequin perfectly, but you...not so much. Skirts should be barely above or at your knee, says Griffin. Any longer and you'll look dowdy; any shorter and, well, you know what message that sends. Trousers should touch the tops of your shoes but not fall below the heels and drag on the ground. To quickly deal with a pair of too-long pants, slip on a slightly higher pump or try iron-on adhesive tape for a no-sew hem.