Simplicity Sewing Pattern 3099 (P5) Misses and Miss Petite Dress in Two Lengths with Detachable 3D Flowers. One shoulder dress with detachable flowers is close-fitting, lined, and has invisible side seam zipper. Dress can be worn with or without detachable 3D flowers. View B has left side slit. See How to sew a Spiral Rose Flower: Simplicity S3099 video for detailed detachable flower instructions.