Hello Dolly Boutique
on Ebay or from this website. Vintage patterns for Modern Cissy, Tonner, Ellowyne, Gene, CED, American Model, Barbie AND 60cm Obitsu. CED fit 50cm obitsu with minor adjustments. I believe these are all resized from human patterns from the 1920s to present! ebay has some, better selection on picturetrail.
http://www.picturetrail.com/hellodollyboutique