Well, I was a bit late in reading your post and would have been happy to measure one of my daughter's dolls, only you found that site and have the info you need. It is brilliant of you to think of using your fat quarters to make doll clothes for your niece! She will be thrilled! My 22 year old daughter has her 2 dolls on doll stands in her room. Even now that she is in college, she still occasionally changes their outfits. LOL