What is a lounge suit anyway?
“Lounge suit” is a catch-all term for “any suit that isn’t a dinner suit” (known as a tuxedo by some). They come in every color, pattern, fabric, price and cut you can imagine. Chances are that if you have a job in an office, you’re already wearing one all day.
Lounge suits are worn when the dress-code states “cocktail” on the invite. Some people use “cocktail” as a plea for you to wear a jacket, regardless of matching trousers to make an entire suit.