Crochet Elastic Tutu waistband in desired color : Think of these as a bigger version of the crochet elastic headbands. These are a little difficult to find. I got mine from Kissyfacecreations here. The larger one will work well for 4-7 year olds. For smaller kids buy smaller bands. These headbands are very stretchable so one size would fit many.
6 inches X 100 yd Tulle Rolls in desired colors: I got mine from here.
6 inches x 25 yd : Tulle roll in coordinating color ( optional)
Coordinating ribbon scraps
Fake flower in coordinating colors
4 to 6 hours depending on the costume and embellishments chosen.
Fold the waistband in half and try on the child. It should be a snug fit but not uncomfortable. Now measure from the waistband end to the desired length of the dress. ( you have to keep in mind the costume you are making for determining this. mermaid costume will hit right at the toe, princess dress could fall anywhere below the knee to the ankle a fairy dress like Tinkerbell would be short and stay above knees, the ballerina dress would be even shorter staying on the thighs, so take measurements accordingly). Lets call this length L
Making the Tutu and Pettiskirt
Most important first step: Put on your favorite TV show or at least your favorite music. You are going to be cutting and tying tulle for a while here, so you want to be entertained during the time. Do not skip this step if you want to complete the costume before this year's Halloween.
Take the 100 yard tulle roll and cut out strips of length L1 = (L+1) * 2 inches.
Tie the 10 inch Tulle to the strip in the center front about 7-8 inches above the end.
Tie another 10 inch strip at the same point to the other half of this strip. Take the next strip and tie the turquoise tulle about 5 inches above the end. Repeat it for the closest 3 strips to it. For the next strip tie the turquoise tulle about 3 inches above the end. Repeat it for the closest 3 strips.
Untie the other front part and repeat the process that you did for the first half.
Now cut 16 tulle strips, 15 inches long each. Tie these in the center about 2-3 inches above the end. If these strips don't cover all the green strips in the back, cut some more 15 inches long strips and tie them too.
These strips not only make the dress full, but they also add a different color at the bottom to make the dress more attractive. In case of mermaid costume they also helped shape the fishtail.
Step 13: Making the Shoulder Strap
Take a 10 inch long piece of turquoise Fold Over Elastic and tie it at the top of the dress by threading it through the crochet holes. Secure it with a knot on both sides. Having a shoulder strap gives us something to embellish the dress further, and it will also keep the dress stable, while your little mermaid walks and runs. I like knots better than sewing the elastic , because you could easily adjust the knots if you want to adjust the length of the dress or where the band falls.
Step 18: Accessories:
I also wanted to make her satin princess gloves but I just ran out of time.