Create your own exotic lingerie or swimwear with this Strappy Thong Sewing Pattern. This digital download features a mid-rise thong design with triple strap binding sides and a flattering Y-back thong style for a bold, strappy look. Perfect for exotic dancewear, festival outfits, swim bottoms, or custom lingerie.
Sew your own strappy thong bottoms in your favorite 2-way or 4-way stretch fabric, and mix and match with other handmade separates by creating a matching top. Whether you’re sewing for yourself, performance wear, or custom orders, this pattern gives you professional results at home.
Pattern type: PDF Digital Download – no physical product shipped.
If you have any questions before you start your project, feel free to reach out!
- Includes sizes XS-L
- One coverage option, super low rise with thong back
- Formatted to print on US letter (8.5 x 11)
- Test square in US 2 x 2 inch and Metric unit 5.08 cm
- Pattern is color coded per size so you can make YOUR custom size
What You Will Need
- Six pre-cut bias strings
- Under 1/4 yard of 2-way or 4-way stretch fabric
(Optional: lining fabric if you want extra coverage) - Matching thread
- Sewing machine with zig-zag stitch or an overlock (serger) machine
- Elastic Foot
- Optional: Binding foot
(Not required—I personally never used one)
Pattern Assembly
- Optional Lining Step: If using lining, serge (or stay stitch) the lining to the top edge of the diamond on the thong front.
Tip: I like using a serger stitch along the back “V” edge for a clean, finished look. - Attach Elastic: Using an elastic foot attachment, sew both sides of the thong (1) —layering the outer fabric, lining, and ¼” elastic together.
- Hem the Sides: Fold the fabric over the elastic on both sides of thong (1) and topstitch to hem.
- Attach Lower Side Straps: With right sides together, pin each strap (2) end to the lower diamond sides of the front and back thong piece (1). Use 2 pre-made bias strings for the lower side straps (2): measurements available on the sewing pattern
- Attach Upper Side Straps: With right sides together, pin each strap (3) end to the upper diamond sides of the front and back piece (1). Use 2 pre-made bias strings for the upper side straps (3): measurements available on the sewing pattern. Leave about ¼” at the diamond tip for hemming.
- Attach Middle Side Straps (between strap 2 & 3): With right sides together, pin each strap (4) between the upper (2) and lower (3) strap placements on both the front and back thong piece (1). Use 2 pre-made bias strings for the middle straps (4): measurements available on the sewing pattern.
- Sew Straps to Front and Back Diamonds: Using a straight stitch, sew the pinned straps to the diamonds about ½” down from the overlock edge (or top edge) on both the front and back of thong (1)
- Finish Strap Edges In: Fold the straps and serger ends inward along the straight stitch line. Secure with another straight stitch—reinforce the ends by backstitching.
Tip: Tuck in the diamond tips at the front and back to hide raw edges from view.
Follow Along Video https://youtube.com/shorts/sVdeuyDXfxw?feature=share
