I'm kind of freaking out!
I couldn't believe I out grew clothes either. I kept wearing them until they literally fell off. I put my cell phone in one pocket and my wallet in the other side pocket, took a few steps and my pants fell off. I was at the mall and caught them before it was critical. I kept my clothes for about four months until something clicked, I wasn't going to gain back the weight. It has taken me time mentally to grasp the whole WLS process. I had grown out of everything. I came to visit my daughter and she refused to leave the house for me in my baggy clothes. Now I am an Old Navy veteran, love the prices and love most of the styles. I started with 3 pairs of jeans and it has grown to 5. I have a lot more blouses but that's me. I don't want a closet full of clothes. My suggestion is take them to goodwill or wherever when it feels right. Don't rush. Oh btw, I had to shop and try clothes on at night because I had no idea what sizes I wore. That was fun. 
Get rid of them! I donated mine to a women's group that helps women get employed or out of abusive situations. Don't forget to get a tax receipt if you donate. You'll be surprised how much of a deduction that can add up to! So far I've gotten rid of 10 large garbage bags. I had waaaayy too many clothes!
