Easy to sew mermaid doll costume for standard 18" dolls. My daughters have had so much pretend play fun with their dolls dressed up as mermaids and my boys pretending to be the pirates. I just know your daughter will love putting this costume on her doll. This pattern also works, with a slight variation, for 15″ Bamboletta Dolls and for Bitty Babies. When you purchase the pattern you get complete sewing instructions, detailed pictures and the patterns for all the needed pieces. Please note that this pattern is for personal use only. You may not sell this pattern, variations of this pattern or clothes made from this pattern.