TSG Potluck: New Jersey or old?

Has heard at TSG studios during the final..."Why do their uniforms look like Elvish formal wear"? - Margo.

Potluck question from TSG commentor Eric:

With more and more Americans becoming fans of soccer, an increased number of jerseys are being seen on the streets. On any given weekend around DC, I can see a handful of jerseys, mostly USMNT or EPL clubs, just walking around and it has become "popular fashion" of late.