Can confirm that you also get the skin on PC if you sign in on Playstation. : r/FortNiteBR
Fortnite cross-platform crossplay guide for PC, PS4, Xbox One, Switch, Mac and mobile - Polygon
Fortnite: Is There PS4 and PC Crossplay? How to Play with Friends on Other Platforms
Fortnite cross-platform crossplay guide for PC, PS4, Xbox One, Switch, Mac and mobile - Polygon
Fortnite cross platform guide: Playing across platforms - Android Authority
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