Woah, all of the prototypes are for Julie these days.
I found a prototype of Julie's meet sweater! It is purple instead of the yellow it is now. Here it is:

I like it a bit better in purple, but the yellow suits Julie more. Maybe the yellow is more 70's.
COMMENT DISCUSSION QUESTION: Would you rather go to a million-story American Girl Store and buy the whole store or buy 3 dolls of your choice in one day?
MY ANSWER: 3 dolls. Buying a whole store is unreasonable.