Mar 07, 2022 - 10:35 AM
Hello. At size 18W I would say to try the XX-Large to start (designed for a size 20-22, 46-48 bust and 48-50 hips). If they're too loose or anything just get in touch with us at 1-800-783-8326 or email@example.com and we'd be happy to help you with a prepaid return label to exchange or return it.
Please let us know if you have any questions on sizing and we can provide any specific measurements for you that should help. Just check in with us by phone or email and we'd be happy to help.