Russell Westbrook & Kid Cudi

Kid Cudi is back to wearing dress-like garments, but a new fella has emerged in something similar ... an NBA player who's kinda considered a man's man, which is a huge statement.

Russell Westbrook posted photos this weekend of himself in the Big Apple for NYFW -- and he was wearing none other than a skirt (or a kilt, perhaps) underneath a cardigan sweater. He also had some black boots to offset the cream color scheme ... not to mention blue hair.

His caption referenced lyrics from Kendrick Lamar's verse on Baby Keem's new single, "Family Ties," ... "'Don’t address me unless it’s with four letters' @kendricklamar"

RW is wearing Thom Browne here -- which is definitely all about the Scottish kilt…