In addition to the shirt and suit, I was able to pick out a tie and dress shoes from Suitsupply to complete the look. You'll also find socks, pocket squares, belts, and more online and in-store.

SuitSupply’s Havana suit, another slim-cut style, was cited by three men in their 30s. It has a classic look, they said, and is something they could see themselves wearing for years.

Suitsupply’s staff, which includes on-site tailors, attends its “suit school” in New York before hitting the sales floor. This spring, according to de Gruiter, look for three-piece suits in wool linen ...