The outfits are fairly similar, however the Mage has two long bits of the shirt at the front and the shoes are different, not to mention the added swirls on the Mage shirt and the sleeves are longer by a sinch.
Well, actually the Witch design was revealed when Jade achieved God Tier. The only ones that weren't revealed were the Rouge and Mage classes. I just wish we could see the detail on the outfits, that way I can draw myself as the Mage of Space. XD