According to one auction I'm seeing, the PJs, a pony holder, a booklet of slumber party ideas and a hanger. Another one shows slippers that are not included but they may have come with it originally. If your seller got it from the outlet, that could be why there are no slippers.
Hope this helps, I'll go check out Curt's site and see. I don't have catalogs going back that far since I just got into this last year around October.