Captions can be wrong.
Exactly. If I could at least remember what my original source was, I'd have a clue as to its reliability.
This version of the photo is watermarked from the St Petersburg photoarchive. Perhaps it was labeled there?
There does appear to be similarity between the two girls don't you agree?
Perhaps, but it's awfully hard to tell considering the little girl on the left is pulling a bit of a face.