The Grim Fable skin is an Epic Fortnite outfit. Grim Fable was available via the Item Shop for 1500 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Grim Fable Outfit Details
Once upon a time...
Fortnite Grim Fable Outfit PNG Images
Here is the PNG images of Grim Fable below!