The Robe is a vanity item that appears to resemble a magician's robe. There is a subtle walking animation whilst wearing the Robe. The Robe looks very similar to Tim and the Dark Caster's robe, the only exception being that their robes are torn, showing their feet.
As of the 1.2 update the Robe is used in the crafting of 6 different other magical robes.
If the player is using a weapon/tool or is holding a torch/candle or placing blocks while walking or jumping, the robe animation does not work. Also, the bottom portion of the pants become visible, poking out from the side of the robe.
If the player has any type of wings and is equipping a robe, when the player flies/glides with the wings, the robe animation does not work.