Need Help Finding Plus-Sized Clothing

I used to attend a local support group that had clothing exchanges, but haven't been able to attend in some time.

I'm badly in need of some plus-sized clothing (size 24/26, 4x, etc) and am hoping to find an upcoming clothing exchange or someone local who has these sizes.

Suggestions? Tips?

 where do you live?   I have some.... 

I live in Tucson, but if you had a lot, I'm sure I could make arrangements to get them from you.
My problem is that I'm tall (5'10), so a lot of things aren't long enough if they come from petite folks.

But if you have some that would be worth a drive, I could probably pick them up from you. I'm headed to the Phoenix science center for my son's fieldtrip in a couple of weeks, and maybe I can break away long enough to pick up the clothes if you're not on the opposite of the world from there....