What is the fashion of TTL like? Do men still wear suits daily since the US is more conformist?
It depends on the workplace, as in our world. In TTL, there are some civilian suit designs in the US, by 2021, that are inspired by military dress uniforms.
Wearing hats lasted longer in the US in TTL in comparison to our world. Hats did not really fade as a fashion choice in the US until the early 1970s in TTL.