You’ll also need a sewing machine, purple thread, scissors, super glue, and light purple paint (lavender or lilac is the shade you want).

After it’s sewn on, the sheer fabric should hang at approximately your waist, covering most of your stomach. Try it on to make sure it looks the way you want it to before proceeding. If everything looks good, set the top aside for now.

You could also use purple spray paint for the shells. [4] X Research source Feel free to add any additional elements you want to the shells. Some great ideas would be glitter, stick on rhinestones, additional painted details – whatever you like!

Super glue dries in about 30 seconds and sets in 2 minutes. [5] X Research source When you place the shell on the top, hold it down tightly in place for the full 2 minutes before going on to the next shell.

You’ll also need a sewing machine, green and blue thread, scissors, and about 12 inches of elastic.

Since you need two of these green pieces, you could save time and ensure the pieces are identical in size by fold the green fabric in half before you start. That way you can trace around your body and cut them both identically at the same time. When you lay down on the green fabric, you want to make sure you’re on top of it from the waist down only. The fabric needs to extend past your feet when you lay down. This is so the fins can be drawn. If you prefer, you can lay down on a large piece of paper and trace your body onto that. You’d then use that as a stencil with which to cut the fabric down to size. [7] X Research source

You can cut the split just at the bottom of the fins, so it does not show your legs.

You’ll also need a sewing machine, green thread and scissors.

You can stop at your calves rather than your heels if you want a costume that’s a bit easier to move around in.

It would be cute to add some little embellishments in the hair, like small barrettes with starfish on them. [13] X Research source You could also spray the hair lightly with the canned glitter made specifically for hair – it would be pretty and look like water droplets.

You could also add glittery aqua eye shadow or face shimmer for a great Ariel vibe.