What to do with old clothes that don't fit

[Owlie]

Most of my wardrobe consists of t-shirts and jeans so take this with a grain of salt:

I'd keep maybe one or two pairs of pants (that's what fluctuates for me).

[Veronica]

I replaced it all - twice in the last year. I don't keep anything that doesn't fit. I think I'm done losing weight now though.

Veronica

[Crankin]

I lost about 20 lbs when I started cycling. I saved one pair of jeans in one size larger. After about 3 years, I threw them out. I didn't want to assume I'd gain the weight back, and I didn't.
I give all of my clothes to Goodwill, or a charity that provides business type clothes to women getting off of welfare (I used to get much more dressed up for work).
I basically go through my closet at the change of seasons. Anything I haven't worn in a year goes to Goodwill. This stops me from buying "faddish" clothes. I spend a lot more on cycling clothes now, but now I am buying a few more things for work... since my only summer type clothes are not totally appropriate for work, even in a casual environment.