Designing a shop and character customization (best practices)?

My new iOS title has an in game shop containing dozens (and soon hundreds) of items which can be worn by the player's character. My current method of adding a new item to the game is somewhat tedious, as I'm just running a ton of if statements in my equipper script that swaps textures and/or turns bones on or off.
e.g. : equipping "black top hat" would:
-unhide hat bone
-swap default hat bone texture to black top hat
-hide bowler hat
-hide halo
-hide hair clip
-hide demon horns
-etc
-etc
.............you get the idea. It becomes very tedious, because each new item i add requires editing a ton of ifs (one for each item).

Anyone here with experience implementing character customization got any pointers? Thanks in advance!

 

Hello.
For me to be able to help you i need to know some stuff.
Can you tell me, how you handle equipping hats in-game? -Do you have an Inventory, which lets you equip and store items like in any rpg, or how is it?

Jonas