Steelers Star Antonio Brown -- Check Out My $600 Hat ... Pharrell Ain't Got Nothin' On Me

Pharrell Williams has officially passed the wide brim hat torch to a guy who torches defenses ... Steelers star Antonio Brown tells TMZ Sports his fashion forward lid set him back over $600!

Brown is with the rest of the sports world at the Super Bowl in Arizona so when our camera guy ran into the always dapper Pro Bowler we had to ask ... dude, what's with the hat?

That's when Brown swagged us out a little bit, telling us that his fancy lid wasn't any regular dome-shielder ... this one put a $600 dent in his $42 million pockets.

One more thing ... we're not fashion experts ... and far be it for us to question a man's right to expression, but ...