It's sold out, when I last checked in May. I found a couple on ebay (one pink, one yellow) and I think you should have a good chance of finding them there. Good luck!
I saw a yellow one very recently on ebay by personalshoppers (seller who sells only authentic stuff).
I don't know if the auction is still there but even if you don't find it at a chanel store, it would be easy to find it on ebay