Revan's Robes have been fixed on 8th of January 2013, therefore this thread is no longer needed.
The robe now looks as it should:
Fixed Cartel Revan's Robe - http://img823.imageshack.us/img823/1...0815031543.jpg
Revan NPC - http://images2.wikia.nocookie.net/__...inalDuel01.jpg
According to patch notes the Mask clipping issue has also been fixed:
* Revan's Mask no longer clips through hoods on some body types.
Now I can only hope that the robe will stay fixed as it is now and not get broken again, because some random guy complained that he liked the wrong Revan's Robe better...
You can find the original post wrapped as a spoiler below: