The brand is a reference to the New York City based skatewear/streetwear store Supreme. The Bigness logo borrows from the iconic Supreme 'box logo' and is placed on the ingame garments in the same manner.
The items available for the player to purchase include caps, tees, jackets, hoodies, and ski masks.
It can also be noted that several of the jackets bear the Chianski logo on the shoulder, which is a reference to the frequent collaborations between Supreme and The North Face.
The brand was introduced within the Import/Export update is only available for purchase in GTA: Online