The Dream Bough Robes is a quest reward available for Horde and Alliance characters.
This reward appears to be obtainable by Mages, Priests and Warlocks only but I am not entirely sure of that.
There are 2 other similar dresses (same color, same art) available in-game.
You may or may not have completed that quest already. To find out, simply use a quest checker like: Icy Veins
- Mage |Priest |Warlock
- Source: Quest Reward
- Level: —
- Binds: BoP
- Armor: Cloth
- Slot: Chest