Verified Open Pattern (1.0.0-published)

This pattern includes verified home printable specification files, dual-unit sizing charts, and full cutting guides. License: Drafted by Threadline Patterns. CC BY-SA 4.0 International..

Sleeveless Top Beginner XS to 3XL (Bust 80–132 cm / 31.5"–52.0")

Classic Sleeveless Shell

The Sleeveless Shell is a timeless wardrobe foundational piece designed for layering under blazers or pairing with trousers. Features neat bust darts for tailored shaping, an all-in-one neckline and armhole facing, and an elegant back neck keyhole slit fastened with a rouleau loop and delicate button.

Jump to Downloads Front & Back Views Size & Measurements Fabric & Tools Step-by-Step Instructions

Technical Garment Schematics

Front and back flats illustrating seam lines, hem curves, and design details.

Front Elevation

Back Elevation

Sizing & Measurement Tables

Review both body benchmarks and finished garment ease before cutting your cloth.

Measurement Unit

Toggle between metric and imperial values across all charts

1. Body Measurements Chart

Your physical body dimensions. Measure over undergarments with a snug tape.

Swipe sizes

Size	Bust	Waist	Hip
XS	80 cm	62 cm	88 cm
S	86 cm	68 cm	94 cm
M	94 cm	76 cm	102 cm
L	102 cm	84 cm	110 cm
XL	112 cm	94 cm	120 cm
2XL	122 cm	104 cm	130 cm
3XL	132 cm	116 cm	142 cm

2. Finished Garment Measurements Chart

Dimensions of the sewn garment, including designed wearing ease.

Swipe sizes

Size	Finished Bust	Finished Length	Bottom Hem
XS	86 cm	56 cm	94 cm
S	92 cm	57 cm	100 cm
M	100 cm	58.5 cm	108 cm
L	108 cm	60 cm	116 cm
XL	118 cm	61.5 cm	126 cm
2XL	128 cm	63 cm	136 cm
3XL	138 cm	64.5 cm	146 cm

Size Selection Guidance

Select size based on high bust measurement. Bust darts provide tailored contouring without clinging.

Wearing Ease Explanation

Tailored ease of +6 cm (+2.4") at bust. Designed to skim neatly under suiting jackets.

Fabric & Materials

Recommended substrates, stretch allowances, yardage requirements, and required notions.

Recommended Fabrics

Structured light to midweight wovens

Cotton sateen or crisp broadcloth for smooth workwear polish
Linen-cotton blend (145 gsm) for breathable elegance
Silk or polyester crepe for tailored drape
Lightweight wool suiting crepe for office capsule wardrobes

Stretch Requirement: None (0% stretch - stable woven)

Notions & Sewing Tools

Ensure you have these ready before starting.

Notions:

One small shank or shirt button (10–12 mm)
All-purpose thread
Fusible stay tape for keyhole (0.2 m)

Tools Required:

Sewing machine
Tailor ham for pressing bust darts
Fine shears

Fabric Yardage Requirements

Size Bracket	115 cm (45") Width	150 cm (60") Width
XS – M	1.2 m (1.3 yd)	0.9 m (1 yd)
L – XL	1.4 m (1.5 yd)	1.1 m (1.2 yd)
2XL – 3XL	1.7 m (1.9 yd)	1.3 m (1.4 yd)

Seam Allowances & Cutting Layout

Exact seam allowances included in pattern lines, piece list, and cutting discipline.

Standard Seams

1.5 cm (5/8 in) on side and shoulder seams.

Hem Allowance

2.0 cm (3/4 in) blind or edgestitched hem.

Neck & Armhole

1.0 cm (3/8 in) for all-in-one facing.

Pattern Pieces to Cut

Piece Name	Quantity & Orientation	Grainline / Cutting Notes
Front Bodice with Bust Darts	Cut 1 on fold	Straight of grain
Back Bodice with Keyhole Slit	Cut 1 pair	Straight of grain
All-in-One Facings	Cut 1 set	Straight of grain

Fabric Cutting Checklist:

Mark bust dart apex points accurately using tailor chalk.

Printable Pattern Files

Download PDF files for home printing on standard desktop printers.

Download Pattern Files

1.0.0

Direct pattern downloads. No registration, email capture, or paywalls required.

Updated: 2026-03-01

Instructions Available

Complete offline sewing guidebook with dual calibration test squares, yardage charts, pattern piece cut list, numbered steps, and troubleshooting.

13.7 KB • 4 pages

Download (13.7 KB)

A4 Available

Full-scale 1:1 tiled master pattern for A4 paper (15 sheets). Includes dual 50mm/2.0in calibration boxes, assembly map, grainlines, and corner registration crosshairs.

102.9 KB • 15 pages

Download (102.9 KB)

US Letter Available

Full-scale 1:1 tiled master pattern for US Letter paper (15 sheets). Includes dual 50mm/2.0in calibration boxes, assembly map, grainlines, and corner registration crosshairs.

103.0 KB • 15 pages

Download (103.0 KB)

Printer Calibration Test Sheet (Free Single Sheet) 2.4 KB

Print at 100% scale (no fit-to-page) and measure the 50mm and 2-inch test boxes with a hard ruler.

Download Test Sheet

Print Instructions:

Open the downloaded PDF in Adobe Acrobat Reader or a dedicated desktop PDF viewer. In the print dialog, select "Actual Size" or "Custom Scale: 100%". Never select "Fit to Printable Area". Always measure the calibration square on Page 1 before proceeding.

These files are prepared from documented pattern references through a technical drafting workflow. If anything appears incorrect, unclear, or causes a sewing problem, email feedbacksewingpattern@gmail.com. Send pattern feedback.

100% Scale Verification

Print Page 1 at 100% scale without scaling. Check 50 mm (Metric) or 2.0 in [50.8 mm] (Imperial) test square with a hard ruler.

Read full printing & calibration guide →

Tile Assembly Instructions

Align numbered letter and row marks. Butt edges together without overlapping untrimmed paper.

Step-by-Step Sewing Instructions

Draft construction notes. Readable online; review against the pattern pieces before sewing.

Sew Bust Darts

Fold and pin bust darts matching legs. Stitch from side seam toward apex point. Press darts downward over tailor ham.

Construct Back Keyhole

Attach thread loop or rouleau loop to left keyhole edge. Stitch center back seam up to keyhole mark.

Shoulder Seams & All-in-One Facing Attachment

Join front and back bodice right sides together at shoulder seams. Stitch facing to neckline and armholes right sides together using the burrito method. Turn right side out and press seam allowances.

Side Seams & Hem

Align front and back bodice right sides together. Stitch continuous side seams from underarm to hem. Press seam allowances open. Hem bottom edge and attach button.