Why are you a size 6 in one boutique but a size 10 in another? Vanity sizing—labeling clothes with smaller numbers to make buyers feel good—is a physical retail trick that causes sizing confusion online.
1. How to Read Sizing Charts Correctly
Ignore the letters S, M, L. They are arbitrary. Instead, click the "Garment Measurements" link. Compare the flat Chest Width or Waist Circumference to clothes that already fit you perfectly at home.
2. испанское vs. US Sizing
Spain and European brands (like Zara) fit narrower and have smaller arm openings compared to US brands. Always size up on European-cut garments if you have a broader frame.