It's just the way it was! I also saw a dress of Elizabeth Taylor's from Little Women in Paris, the one covered in autumn leaves, and that was child sized, both short and skinny.
And you're absolutely right--one can have similar measurements and different weights.
Again, thank you for having all this infotmation in one spot.
The Joan Crawford Mildred Pierce pinafore was tiny.
This chart is primarily for entertainment since so many dispute the numbers that are out there, and everyone thinks that their numbers are right.
Especially the stats of the stars.