Oh--very sweet, dear. It's not the same pattern, but Hancock Fabric (which you can find on the web) does sell some Kermit and Piggy and other muppet fabrics. There is a green Kermit fleece with pictures of Kermit playing the banjo. There are also some nice flannel patterns--I have a pillow case with half Kermit flannel and half Piggy flannel. (And by coincidence, one of my friends has one JUST LIKE IT!)
Hope that helps you find Kermit fabric!