If you’re looking for a T-shirt that will pair just as seamlessly with a black skirt for cocktail hour, consider Wardrobe.NYC, which was cofounded by longtime stylist and editor Christine Centenera.

On the most formal end of the cocktail scale, you’d be expected to show up in a dark suit (think: navy, black, or charcoal) with a white shirt and a dark, solid-colored tie, along with a pair of ...

Black trousers can work, but we’d advise against going for the full monochromatic look unless you’re wearing a matching suit ...

Slightly less formal than black tie • Women: Wear a floor-length gown, a knee-length cocktail dress or little black dress with heels, or a dressy suit. • Men: Wear a dark suit and tie with ...