All of my old clothes will be going to charity shops or to my mum to sell at car boot sales for charity. I did consider selling the decent stuff on Ebay but really don't have the time to be running to the Post Office all the time - my nearest Post Offices to home and work both require driving, so would probably spend anything I earnt on fuel anyway!
I am currently fitting back into some of my old clothes that I kept hold of as I knew we were planning on joining SW. Other than those I don't plan on buying any new clothes for a while, as I plan on shifting quite a few more pounds yet and don't want to waste money on clothes that only fit for a matter of weeks. Work clothes I have plenty of the old stuff that now fits. Casual around home stuff, then my joggers, etc, will just have to make do for now, even if it requires a safety pin in the waist!
As soon as anything gets too big to carry on wearing it goes into a bin bag ready to take for my mum... not having larger clothes still there means I'll be more likely to keep the weight I have already lost off!
For every 1lb I have lost, I have put £5 away in a jar towards my new wardrobe once I reach target, and plan on continuing with it - if I get to the target weight I currently plan, I will have just under £300 to spend!