Her dress and polka dot bloomers are very like the Tutti sized Buffy's.
Her dress is slightly different from Buffy's and can be identified in the following ways:
Tutti tag inside the dress
shorter, more gathered skirt
There were a lot of blonde Tutti's, but only one with this particular hairdo. She has sort of a top knot.
There was a later Walking My Dolly set made for the European market. The doll and her outfit were totally different and the carriage was red instead of pink.
See you tomorrow!