UPDATE: Kelly's designs are now owned by Colonial Needle which has them on her website. Note that any canvas with a stitch guide is marked SG in the catalogue.
Some of the guides for Kelly's pieces were designer clubs, created by the designer and sold to shops who distributed them to customers. The pear club had problems of supply as items didn't arrive when expected. The firecracker club seems to have had a different sort of problem. I'm adding these criticisms here so that you are a bit careful if you included in a Kelly Clark club created by the designer instead of by a local shop.
UPDATE: You can buy Kelly's Katt Z. Witch (who reminds me of Hermonine Granger if you have a Harry Potter fan to stitch for) from Amy Bunger's website. The best part? The Robin King stitch guide is included. I've seen this guide in person and it is fabulous!