Make this mermaid costume for Halloween and enjoy dress-up all year around. The idea came from my granddaughers. After watching Doll Costume Dress Up on Sewing With Nancy, my oldest granddaughter Avery promptly asked, “Gramma, for my birthday could you make a mermaid costume for my doll and one for me too? Now, don’t make an opening for my feet, I can swim like a mermaid with a tail!” Then I asked her sister, Luella what she would like for her birthday. Answer: “Same as Avery!” So, two mermaid sets—big and small—were the task. (Much to Avery’s dismay, I made the big-girl fish tails with openings for feet!)
My Sewing With Nancy guest and friend, Joan Hinds developed the pattern for an 18″ doll dress-up mermaid costume. You can see how we created it in sequin fabric on the Doll Costume Dress Up episode online, and you’ll find the patterns in the book. The pattern can be scaled (pun intended) to fit child sizes, giving you matching dress-up clothes for your favorite little ones. Here’s how I scaled the design and created a mermaid tail for my granddaughters, ages six and four.
For both doll and child sizes:
For 18″ doll size:
- 1/3 yd. sequin knit fabric
- 1/3 yd. lining fabric
- 11″ elastic, 1/4″ wide
- 1/4 yd. satin fabric
- 1/4 yd. matching sheer shimmer iridescent fabric
- 1 yd. decorative trim
- Ready-made Doll T-shirt
Create the Girls’ Mermaid Tail Pattern
- Draw a 13″ x 20″ rectangle on Pattern Tracing Paper.
- At lower right edge, draw a curve using the 5-in-1 Sliding Gauge.
- Place a dot at the top of the curve, 1/4″ in from edge.
- Print the tail pattern and tape at lower left edge.
- Cut out the paper pattern.
Construct the Tail
- Place fabric wrong sides together, and cut two tails from both the sequin fabric and the lining fabric.
- Sew side seams and bottom edge of the tail, right sides together, leaving opening between dots as marked on the pattern piece.
- Turn to the right side and press.
Note from Nancy: Use Point Turner to turn tail points.
- Repeat steps above for lining, but don’t turn sewn lining to right side.
- With wrong sides together, insert the lining inside the tail. Zigzag or serge the top edges together.
- Fold 1/2″ of the waist fabric/lining toward the wrong side and stitch, leaving a 1″ opening for an elastic casing.
- Thread the elastic through the casing, using a Clip and Glide Bodkin. Secure the edges of the elastic. Optional: Sew opening closed.
- Turn up a 1/4″ hem to the wrong side, folding the lower edges of the sequin and lining fabric together; topstitch.
Use a Point Turner to ”stuff” the tail and topstitch to hold the stuffing in place.
Create the 18″ Doll Top
Note from Nancy: In the Doll Costume Dress Up book, a pattern is provided for the 18″ doll mermaid top. For another option, I decided to do a quick makeover on a ready-made 18″ doll T-shirt.
- Create a front bodice panel and topstitch to an existing T-shirt. The shirt pictured below is for an 18″ doll.
- Cut a bodice shape from Pattern Tracing Paper. Cut one bodice panel from the shimmer overlay and two panels from the lining.
- Sandwich the shimmer fabric between the two lining pieces. Pin.
- Sew using a 1/4″ seam allowance; leaving the lower edge unstitched.
- Notch seam allowance at curves. Remember to clip to, but not through, the stitching line.
- Turn the bodice shape right side out.
- Smooth the curves with a point turner tool.
- Fold the lower edge towards the bodice panel lining, and press up a 1/4″ hem.
Ta-Dah! Time for a make-believe swim!
Watch Doll Costume Dress Up on Sewing With Nancy online.
For a chance to win a copy of the book, Doll Costume Dress Up by Joan Hinds, please leave a comment sharing your favorite costume-sewing memory. Random winner within the continental US will be shipped a paper book or international winner will be emailed an electronic book from F+W Media.
Bye for now,
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