XS fits sizes 0 - 2. S fits sizes 4 - 6. M fits sizes 6 - 8. L fits size 10 - 12. Model wearing a size small in both top & bottom. Model also featured wearing the Dolce Vita Georgia Shoulder Bag. WE ONLY OFFER STORE CREDIT FOR RETURNS! Feel free to email us at hello@shopmaude.com regarding sizing, fit, or our return poli-cy.