It's not modificatory, but the use of particular kinds of clothing in, even fairly historically speaking, recent British culture to understand that men were expected to perform or look a certain way in certain contexts.

它不是为了装饰，即使从历史上来说，它是近代英国文化中一种特定的服装，因为男人需要在特定的环境中展现出特定的样子。