Pedalpowerluigi and Einstein95 have discovered a Great Fairies outfit for Link in his latest adventure The Legend of Zelda: Tri Force Heroes. It looks as though it is the same model as the one found in The Legend of Zelda: A Link Between Worlds which suggests that it is a prototype. Still, it is certainly an interesting discovery!
Me and einstein95 found a weird outfit resembling Great Fairies from A Link Between Worlds from the files of the game. Looking at Link’s face suggests that this was probably an in-progress model from when ALBW Link was made into the Toon Link artstyle for TFH.