Is it possible to buy clothes for your cat?
Yes. They make Juicy Couture outfits for cats. At your local pet store, you can also get Santa outfits and other costumes.
As long as you have a cat that sheds, you will have cat hair on your clothes. Give up, go get a good lint roller with a lot of refills, and accept that you are GOING to get cat hair on your clothes. I find myself picking out clothes by how well cat hair will blend in. Sorry, but it seems to be part of the price for owning a cat!