The NUMBER ONE pattern is a bustier top with a structured and technical cut, designed for expert-level seamstresses. Designed to provide precise support and a professional finish, it offers several cup variations to ensure an optimal fit for different body shapes.
Thanks to its meticulous construction (lining, interfacing, cup padding), this pattern allows you to create an elegant, perfectly fitted bustier, ideal for formal outfits or statement pieces in your wardrobe.
✂️ Pattern features
- Type: Women’s bustier sewing pattern (PDF)
- Sewing level: Expert
- Sizes: XS to L
- Seam allowances: included
- Sizes included: A4, A0 and US Letter
Size variations by cut
- XS: AA cut, A cut
- S: size AA, size A, size B
- M: cut A, cut B, cut C
- L: cut B, cut C
⚠️ As sizing standards may vary by region, please check the size chart in the photo gallery before purchasing to ensure a good fit.
🧵 Recommended fabrics & yardage
Recommended fabrics:
- Tweed
- Cotton
- Crepe
- Linen
- Combed wool
- Cashmere
Approximate yardage (width 150 cm / 60″):
- Main fabric: 50 cm
- Lining fabric: 50 cm
- Interlining: 50 cm
- Foam for caps: 20 × 40 cm (example used: 3 mm thick)
- Ribbon for straps
- Zip: 19 to 33 cm
🪡 Materials required
- Ruler and measuring tape
- Thread to match the fabric
- Scissors or rotary cutter
- Iron
- Sewing clips or pins
💡 For technical or slightly stretchy fabrics, we recommend using textured polyester or nylon threads to ensure strength and comfort.
✂️ Sewing experience
The NUMBER ONE pattern is designed for experienced seamstresses wishing to master advanced techniques:
- fitting using differentiated cups,
- fitting of foam and interfacing,
- precise assembly of a structured bustier.
The detailed instructions, accompanied by professional diagrams and photo tutorials for the inner pieces, ensure a neat and long-lasting result. All our patterns are tested, worn and perfected.
📂 Contents of the PDF pattern
- Computer-drawn pattern pieces
- Professional diagrams with step-by-step instructions
- Photo tutorials for interior finishes
- Glossary of sewing terms, useful for learning more about techniques
⬇️ Instant download
This product is a PDF sewing pattern (not a finished garment).
Can be printed directly at home on A4 paper, with simple assembly.
Due to the digital nature of the product, no refunds are possible once downloaded.












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