The Jellie skin is an Rare Fortnite outfit. Jellie was available via the Item Shop for 1200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Jellie Outfit Details
The anemone you don't want for an enemy.
Fortnite Jellie Outfit PNG Images
Here is the PNG images of Jellie below!