Shopping TTYA Clothing Size for a 28cm YoSD?

Hello, All!

Hopefully this is in the right category!

I purchased some TTYA clothing secondhand for my YoSD boy ages back, and I was curious as to what sizing category it might have been originally purchased from. Though I think it might be under the USD size just from eyeballing the pictures on the TTYA site, I'm unsure.

Does anybody with previous TTYA shopping experience have some insight on buying from them for a YoSD?

 

@CloakedSchemer

Thank you! Now I can shop with more confidence when I go about expanding this boy's wardrobe, lol.