wondering if anyone is a similar size to me and can answer sizing questions

so the only items i have are the dance studio pants in a size 0 and the define cropped jacket in a size 0 and both of those fit well (obviously the jacket is skin tight but that’s how i wanted it.)

do these specific items seem to run the same size as other clothes in the store? and what letter size would i be xxs, or xxxs?

for reference my chest is about 31”, waist 24”, hips 33.5” and the size chart seems to suggest i’m a size 4/xs but im not that in either of the items i own