EPIC GAME STORE: The DLC should automatically be added into your account and will unlock when you visit a grotto.
Console players will need to add the Free DLC in the store and then visit a grotto.
PS4 NA: https://store.playstation.com/en-us/product/UP0115-CUSA14519_00-TGRSKN0000000000
PS4 EU: https://store.playstation.com/en-gb/product/EP0114-CUSA14538_00-TGRSKN0000000000
XBox: https://www.microsoft.com/en-us/p/maneater-tiger-skin/9n01f7qn4hqv
Console players will need to add the Free DLC in the store and then visit a grotto.
PS4 NA: https://store.playstation.com/en-us/product/UP0115-CUSA14519_00-TGRSKN0000000000
PS4 EU: https://store.playstation.com/en-gb/product/EP0114-CUSA14538_00-TGRSKN0000000000
XBox: https://www.microsoft.com/en-us/p/maneater-tiger-skin/9n01f7qn4hqv