Champion never been out of style.
Be for hip hop, they were the premier athletic clothing, remember NBA used to make their official jerseys from champion before opening up the licence. Reverse Weave has always and still is the most superior sweats. Then of course hip hop, but mostly blacks in general been rocking champion, cause it was affordable, we were always doing something athletic when we were young before the internet, and its just a staple like a pair of hanes or fruit of the loom is for underwear.
Supreme just helped to elevate champions profile as a fashion brand. But I would never wear it fashion wise (unless it was supreme). Just the basic reverse weave for me