As stated on the product page, our T-shirts are unisex, which is why we suggest that ladies size down. There is also a size chart on all products for your convenience. If you prefer to exchange, please click here to complete a Returns/Exchange form. As soon as we receive your form, we will email you a prepaid return label and you can conveniently place your item in the mail to be shipped back. Once we receive your item, we will process your exchange. Please be sure to indicate which size you prefer.