If you want this experience legally, the "Hot" DLC is available on the eShop for $39.99 (Kombat Pack) atop the $69.99 game. But for those with a secondary offline Switch, the NSP route remains popular.
Includes 1,250 Dragon Krystals (in-game currency) to spend on additional "hot" cosmetics, gear, and palettes in the Premium Shop. mortal kombat 1 premium edition switch nsp dlc hot