Tops/Bottoms/Dresses/Rompers/Jumpsuits:

 Small US 0/2
Medium US 4/6
Large US 8/10

 

Jeans: 

 24 US 00
25 US 0
26 US 2
27 US 4
28 US 6
29 US 8
30 US 10
31 US 12
32 US 14