A friend of mine has an Esty store selling home made items especially for Duffy & Shellie May:
Clothes and Accessories for Duffy and Shellie May by DSMClothier
The Mickey shirt and Minnie dress my bears for for Christmas came from here. Really great quality (and shipping is fast)! She's got more stuff planned for 2014 (she's working on new creations all the time). I'm always feeding her suggestions for new outfit ideas too.