Once you purchase an item, it is immediately and automatically added to your wardrobe. You can find all the items you own in the filters. Just tap on Inventory - My items and choose Worn or Unworn.
Please note that there is no technical capability for us to remove items from your wardrobe at any point in the gameplay. If you need assistance finding an item in your inventory or verifying its presence, feel free to contact our customer support team anytime.