While opinions differ greatly on the true definition of business casual dressing, the general consensus is that business casual falls between casual clothing, such as jeans and T-shirts, and professional clothing, such as suits. Business casual includes slacks, pants, skirts, dresses, collared shirts and blouses that are modest, pressed and clean.
Slacks and pants are typically made up of cotton or synthetic fibers in neutral colors, such as black, navy blue, gray, brown and tan; they should not fit too tight. Jeans, sweatpants, shorts, leggings and spandex pants are considered inappropriate. Skirts and dresses should reach the knee and be comfortable and loose enough to sit in. Mini-skirts, spaghetti-strap dresses, beach dresses and skorts are all considered unacceptable.
As for tops, collared shirts, dress shirts, sweaters, golf or polo shirts, turtlenecks and silky blouses are all considered appropriate business casual attire. They should cover the stomach, cleavage and arms. Halter tops, sweatshirts, t-shirts, tank tops or shirts with pictures or large slogans are considered unacceptable office wear.
Business casual footwear includes loafers, flats, dress heels, clogs and leather deck-type shoes. Flip-flops, sneakers, slippers and athletic shoes are generally prohibited. Jewelry, perfume and makeup should be subtle, and body piercings and tattoos should be covered. Hats and head coverings are considered inappropriate unless they serve a religious or traditional purpose.