Final answer:
In the context of skinhead fashion, 'braces' refer to suspenders, straps meant to hold up trousers, and are typically thicker and more colorful than those worn in professional environments.
Step-by-step explanation:
The term braces within the context of skinhead clothing refers to what is commonly known as suspenders in American English, which are straps worn over the shoulders to hold up trousers.
This element of fashion is associated with the traditional skinhead subculture, which has its roots in the working-class youths in Britain during the 1960s. The braces often seen as part of the skinhead attire are typically thicker and sometimes brightly-colored, as opposed to the thinner and more subdued varieties commonly worn in professional settings.