Oh, for the love of Mike.
Voterperson, would you please either grow up or get help - preferably both!
An outlet, as it appears your mom means by your description of this conversation, is something that you use as a means of release or of making yourself feel good.
In other words, your mom is saying that you use shopping and purchasing things as a way to make yourself feel worthwhile and valued.
You have no sense of self-worth, so you are obsessively focused on what you can buy and how much it costs. You need things (particularly clothing and accessories); you use these things as your armor.
Your things make you feel valued. You feel smart, pretty, intelligent and self-assured when you see all the clothes you have amassed. You feel even better about it if you were able to buy all this excess and save money at the same time.
Do you need any of it? No, you don't. In fact, I'd be willing to bet you have clothes packed away that you have never even worn - or that you haven't worn in years.
Yes, it's an outlet. Yes, it's sick. No, you cannot accept it.
You cannot accept it because you cannot accept yourself or love yourself - only as it connects to your clothes. Voterperson, it is high time you learned that your CLOTHES have nothing to do with who YOU are.
PLEASE SEEK MENTAL HELP. YOU DESPERATELY NEED IT.