Create your own show-stopping outfit with this Keyhole Mini Dress Sewing Pattern PDF featuring a dramatic open back, front keyhole neckline, and halter-style fit. Designed for stretch fabrics, this fitted mini dress combines bold cutout styling with a secure S-Hook closure and body-hugging silhouette. Perfect for raves, festivals, cosplay, performance wear, and custom costume creations, this sewing pattern includes detailed instructions to help you achieve a polished professional finish. ✨ IncludesSizes XS–LKeyhole halter mini dress with open backUS Letter printable formatDual test square: 2″ x 2″ and 5 x 5 cmColor-coded sizesFilled alignment blocks for accurate page assemblySeparate assembly layout guide �� What You Will Need1 yard Nylon Spandex (2 & 4-Way Stretch), 58–60″ wide¼” cotton braided swimwear elasticMatching threadOverlock/serger or home sewing machine with zigzag/stretch stitch¾” S-Hook closure �� Assembly (Shortened Instructions)Sew the lower side seams using a ¼” seam allowance. Attach ¼” elastic to the raw outer edges and keyhole opening. Open the seams flat and join the upper back straps to the front section. Fold the elastic to the inside and topstitch using a stretch stitch. Construct the neckband into a tube and turn right side out. Attach the neckband to the keyhole opening and secure the S-Hook closure. Hem the lower edge of the dress using a ½” hem allowance. Longer, detailed instructions are included in the PDF pattern. �� Digital DownloadThis is a digital PDF sewing pattern available immediately after purchase. No physical item will be shipped. Due to the nature of digital products, refunds and exchanges are not available. �� Sewing TutorialQuickie construction walkthrough available. �� Explore More Mini Dress Patterns