Resetting the Unworn bonus will allow you to use the garment as new to help increase your unworn bonus.

The reset Unworn feature will reset a garment's Unworn Bonus for the cash value of the garment. To reset the Unworn Bonus of a item you own while styling a look, just tap on the worn item and you will see a blue button asking if you wish to reset the Unworn Bonus. Tap "yes" to confirm resetting the Unworn Bonus or "no" to use the item without resetting the Unworn Bonus.