I've recently gotten some wearable items for my avatar on the quests given to me. I go to view them in my inventory and click on them before hitting 'use this item' then it's taken out of my inventory. However when I go to edit my wardrobe on my avatar, I can't seem to find the items I have recently gotten nor can I figure out how to add them to the avatar. Help would be very appreciated :)

Here's to hoping this helps:

At the bottom of the Wardrobe page, there's several tabs. For items that you placed into the wardrobe, you want to go to the end tab (Items) and in there you should be able to see all the inventory type items for the avatar. If the backgrounds grey you can't wear it (but you can view it on the avatar with the magnifying glass icon) but if it's white it wearable (if it's green its being worn) and you just have to click on it to wear or remove it.

It worked! :D Thanks so much!