I have been the same size (excluding being pregnant, of course) since I was 14. I have had clothing for 15 years, that I still wear. They are in good shape. I don't like to shop, so I always bought high quality staple items, so they last. I have a pair of jeans, that I'm holding onto for dear life. I bought those when I was 13. They are starting to fall apart, and I am SO sad. Of course, I have some clothing that I only wear around the house. I have a swimsuit I've had since before I was pregnant, that I'm still using. I think I will have to retire that this year and I'm so mad. It fits perfectly and I don't want to get a new one!!
No sentimental value, I J. hate shopping!!
Oh...and I have my wedding dress, of course. That's going on 8 years. I put it on a few months ago, because I was bored. I'm relieved it still fits, not that I have anything to use it for!!