In recent years, men’s style has felt like a world of contrasts: luxe streetwear versus trad tailoring; brash Y2K nostalgia versus quiet luxury; slim cuts versus louche. But a consensus is emerging. “A new generation that has grown up with streetwear is embracing all of the codes of traditional menswear, from tailoring to haberdashery,” says Simon Holloway, creative director at Dunhill. “They’re wearing these clothes in a way that’s nonchalant because it’s not required. It’s…

