Ok, I am now seriously bummed that I am living overseas. I just came across this site, Gwynnie Bee. I think it's a really cool idea, and I'm even more impressed with the fact that it is mainly for plus-size women. It's basically clothing rental with the ability to purchase some items. You can try things out, wear items for special occasions, etc. and then send them back. Amazing!
I'm sure there must be other companies doing this, but it's the first time I've come across it. I would definitely go for the free trial if I were in the US!