The Halley skin is an Rare Fortnite outfit. Halley was available via the Item Shop for 1200 V-Bucks and you can buy it from Fortnite Item Shop when it will listed.
Fortnite Halley Skin Details
A bit prickly, until you get to know her.
Fortnite Halley Skin PNG Images
Here is the PNG images of Halley below!