Marin wanted to be a mermaid for Halloween this year so to simplify things, both girls were mermaids. The tails were inspired by this pattern I saw on the Miss Pretty Pretty Etsy store. She sells a pattern if you are interested. I loved her use of colorful felt and the concept of the tails attaching around the waist with velcro. I fashioned the mermaid tails from butcher paper and then cut from felt once I was happy with the size. I bought simple shirts and leggings and attached felt shell boobs. To make the headbands I cut seaweed shapes and starfish (stuffed with cotton) from felt attaching them with hot glue. If you'd like to make your own here is a template for the seaweed and starfish.