My Naomi minidoll arrived in the mail today:
I did order some glasses accessories to try and fit, for character authenticity.
| Naomi's glasses | |
|---|---|
 |
 |
Unfortunately, they didn't quite work.
The normal glasses don't fit on her face and the ski goggles are very oversized.
Based on the fact Naomi and Mia have the exact same tunic, I guess some costume options are reused.
I had been assuming each girl got exclusive options, but after doing some research, it looks like every minidoll part (with the exception of heads/faces) is used by every character.
It looks like Mia and Naomi share the same hair sculpt.