Power dressing
Power dressing refers to a style of clothing and hair intended to make wearers seem authoritative and competent, especially in professional settings in business, law and government. While references to the style apply more typically to women, the look is the same for both sexes: medium-length parted hair (trimmed on the back and sides for men); dark, conservative, usually matching pants and jacket (sometimes a long skirt for women); and bold, colorful "accents", such as ties, kerchiefs or brooches. Gossip columnists often refer to the apparent transformation of women, especially those new to fame, as they shed long hair and casual or quirky clothes for the conformist power-dressing look.
The 1970s books Dress for Success and The Women's Dress for Success Book popularized the concept of "power dressing".[1]