I am not sure about Marcy but would guess that she would fit approx 12/18mth clothes and take a shoe size 4 this is a guess though.
Aleta is a big girl I have her but she is still in originals most of the 2006 bigger girls need a size 6 wide or size 7 shoes and she would wear about 18mth clothes, 24 mths if you want them longer.