Brands frequently offer different size scales for different markets. I am surprised that they offer a smaller scale for items in US stores since I do think Americans tend to be larger. I do know that some manufacturers use different size...
I'd recommend taking as much with you as you can in your suitcases. I'd suggest shipping the rest (not sure which carriers you have but you'll likely have to pay custom fees in the US) Another suggestion, if possible, leave some things...
I am so ready for Spring! These are my top picks for Spring styles:
What are you craving for Spring?
MiH Breathless Skinny jeans:
Liberty of London x J Crew:
Paige Pipeline: