The following three photographs show the difference between using smaller needles and finer thread.
I used exactly the same pattern for both sizes.
The difference beingt I used 1mm knitting needles and 70/2 Venne thread for the larger outfit.
For the smaller outfit I used .07mm knitting needles and Madeira Cotona No 80....
The end result was a 25% difference in size.
The only subtle change I would make in the future would be to have 4 rows less on the sleeve length
for the Belly Button Babe.
This is what one has to take into account when changing needles and threads.
I made one mistake in knitting the smaller outfit..... I added two extra rows which I then followed through on both the dress and petticoat instead of undoing the extra rows.
Venne 70/2 and Madeira Catona 80