For business dinners, office wear is appropriate (provided your workplace isn’t overly casual): trousers with a refined sweater or a blouse and blazer. If you’re going to a work party straight from the office, try a sheath or a wrap dress in a dark shade, or “wear a suit and bring along a feminine blouse and evening-appropriate shoes, like in a metallic shade,” suggests Leah Ingram, an etiquette authority and the founder of giftsandetiquette.com, based in New Hope, Pennsylvania.
