For those of you who bought cosmetics overrides before the new system arrived, The names of some overrides were changed.
Here is a list of the names of all the old overrides:
Paladin -> Paladin Outfit.
Warlord -> Tokhaar Warlord Outfit.
Kalphite -> Kalphite Sentinel Outfit.
Demonflesh -> Greater Demonflesh Armour.
Assassin -> Assassin Outfit.
Skeleton -> Deathless Regent Outfit.
Goth -> Ravenskull Outfit.
Mummy -> Ancient Mummy Outfit.
Replica Dragon -> Replica Dragon Plate Armour.
Sentinel -> Blessed Sentinel Outfit.
Reaver -> Cursed Reaver Outfit.
Hiker -> Hiker Costume.
Skyguard -> Aviansie Skyguard Outfit.
Vyrewatch -> Vyrewatch Skyshadow Outfit.
Snowman -> Snowman Costume.
Samurai -> Samurai Outfit.
Warm Winter -> Warm Winter Outfit.
Dark Lord -> Dark Lord Outfit.
Notice that there are 2 outfits(Remokee, Obsidian) missing from the list. because they were removed as they are not overrides in runescape.