OMANI sizes are based on the standard USA and international sizes such as size small, medium, large, 1x large and 2x large These sizes are used in UAE, USA, and in Europe. For our skirts, pants, dresses, modest wear, and contemporary clothing they are based on the standard U.S.A. & UK sizes such as size small, medium, large or x large. We sometimes carry one size selections this is a USA, UAE, Europe combination of medium and large. Because we ship to worldwide locations, OMANI sends a personal size guide via email upon request based on your place of residence if not listed on the size guide. Here's how: Go to our contact page, tell us what products are looking to buy, then lastly tell us your country of residence. Still need assistance or have further questions about the fit of an item or measurement guidelines, do not hesitate to reach out. Contact Us.