With a throwback jersey and a fitted

from Jay Z – Jigga That Nigga Lyrics on Rap Genius

Meaning

Throwback jersey’s are one-time or limited-time variations on a sports team’s (typically NBA, NFL, NHL, MLB )uniforms styled to resemble uniforms from that team’s past.
Fitted = fitted baseball-style cap, as opposed to the adjustable style. This was popular in the early 2000’s until Jay said
I don’t wear Jerseys I’m 30 plus
give me a crisp pair of jeans, nigga button ups

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