In my not-so-humble opinion, there are a few changes of clothes every man should own: Black Suit This for funerals, weddings, and other formal occasions. Complete this with a white shirt (no button-down collar on this one) and a power tie. A power tie is typically blue or red. More rarely, a yellow or purple power tie can send signals of other importance. Shoes should hold a shine. Socks should be black. Power Suit Usually in a shade of brown or grey, this suit would be for interviews, and other slightly-less-formal situations. With this one, it is acceptable to have a shirt that is not white if you prefer. However, still no button-down collars on the shirt. Also acceptable are non-power ties, depending on circumstance. Shoes should hold a shine. Socks should be black or a dark color that does not clash with the pants nor the shirt, nor the tie. Business Casual Business slacks - usually grey, brown, olive, or khaki - coupled with a button-down long sleeve shirt. Polo shirts a...