Quote Originally Posted by hfang View Post
Basically, the glamour item (the one you want the appearance of) cannot be of a higher item level than what you have equipped.

So if you have a ilvl90 chestpiece and you try to glamour a ilvl120 chestpiece over it, even if they are both level 50, you can't because the game is telling you to equip the higher ilvl item.
Obnoxiously, it's based solely on level rather than ilevel. If I have an Augmented Cryptlurker piece (level 80, i530) and want to glamour a piece of Manusya gear (level 81, i520) over it, despite the Manusya gear being worse stats-wise and ilevel-wise (i520 to i530), I cannot do so as it's higher level (level 81 vs level 80) than the objectively-better armor.