vintage women's attractive sundress

Vintage Ocean Blue cute sundress, says size , XL but this adorable stretchable sundress seems smaller. I would go with a large , but the label states XL. dress has lot of summer colors , (see photos,) yellow, orange. pink and blue. vintage sundress discounted. great summer dress. pre owned and in good condition this is the lowest discount I could do to make a little profit. good dreses for the holidays