The British subculture that was tirelessly mocked then re-purposed into fashion inspo: let’s talk about the C word
Google Images' answer for what a chav looks like. Note the Burberry cap, Adidas hoodie and gold chains, definitely relevant today.
The colour choices make it more fashion than uncouth youth, but the elements are there.
Parallels between Burberry and Gosha Rubchinskiy collaboration (above) and what your mum would call a "chav" (below).
A bucket hat, bumbag and North Face jacket: classic "pinging white boy" attire.