Seems to go way back to the B&W movie era - men in tuxedos, women in evening gowns and boas - glamorous socialites dressed to the nines, watching a couple buys beat each other up. Sometimes the MC is in a tux. I don’t get how that whole package goes together.
How about neckties - did they start as a sign of respect for authority? Analogous to a collar and leash?
A lot of men’s fashion, especially formal wear, takes styling cues from military uniforms, the modern necktie descends from the cravats by some military unit (I want to say it was some mercenaries involved in some French war, but I don’t feel like looking up the specifics right now)
Interesting! Cravats worn by Croatian mercenaries serving in France during the Thirty Years’ War (1618-1648), according to the internets.