PDF - Digital Pattern for the Blouse and Dress Iam Irma by Iam patterns from size 34 to 52 (fr/eng)
I am Irma, a dress and I come in a shirt version. My button placket is hidden, my front is shorter than my back, I have a yoke at the back from which a large box pleat starts. I have a shirt collar and, optionally, a classic sleeve or a butterfly sleeve gathered at the bottom and held by a cuff.
Level: intermediate
Sizes: 34 to 52
Seam allowances: Included
PDF Pattern:
All seam allowances are included.
The pattern pieces do not overlap. Once printed and assembled, you simply cut the pattern to your size and you can start sewing.
The file includes the pattern in A4, US letter, A3, and A0 formats as well as a step-by-step explanatory booklet with diagrams.
Pattern formats to download and print:
A4 / US letter – to print and assemble at home – 53 pages
A3 – to print at work (promise, we won’t tell) – 26 pages
A0 – large format file to be printed by a professional – 3 pages
VERSIONS
Version A: Shirt dress with classic blouse sleeves
Version B: Shirt with classic blouse sleeves
Version C: Shirt dress with gathered butterfly sleeves
Version D: Shirt with gathered butterfly sleeves
SUPPLIES
Fabric
Fusible interfacing: 40 cm x 70 cm
Buttons 1.5 cm in diameter:
Version A: 12 buttons
Version B: 9 buttons
Version C: 10 buttons
Version D: 7 buttons
RECOMMENDED FABRICS
Poplin, viscose, light denim, fine flannel, viscose crepe, fine wool crepe, cotton fabric, washed linen, chambray, wax, fine cotton twill, fine wool fabric, fine jacquard…
REQUIRED YARDAGE (cm)
| Sizes | 34-36 | 38-40 | 42-44 | 46-48 | 50-52 |
| Version A, fabric 140 cm wide | 285 | 290 | 295 | 300 | 310 |
| Version B, fabric 140 cm wide | 195 | 205 | 210 | 210 | 225 |
| Version B, fabric 110 cm wide | 235 | 235 | 240 | 250 | 250 |
| Version C, fabric 140 cm wide | 330 | 335 | 340 | 340 | 345 |
| Version D, fabric 140 cm wide | 220 | 220 | 225 | 235 | 250 |
| Version D, fabric 110 cm wide | 270 | 280 | 285 | 290 | – |
It is not possible to sew versions A and C in a 110 cm wide fabric.
MEASUREMENT CHART (cm)
Height: 1.65 m – Cup: B
| Sizes | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 |
| Bust | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | 110 | 114 |
| Waist | 58 | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 |
| Hip | 84 | 88 | 92 | 96 | 100 | 104 | 108 | 112 | 116 | 120 |
FINISHED GARMENT MEASUREMENTS (cm)
| Sizes | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 |
| Bust | 109 | 113 | 117 | 121 | 125 | 129 | 133 | 137 | 141 | 145 |
| Blouse sleeve length * | 59,4 | 59,7 | 60 | 60,3 | 60,6 | 60,9 | 61,2 | 61,5 | 61,8 | 62,1 |
| Butterfly sleeve length * | 53,7 | 54 | 54,3 | 54,6 | 54,9 | 55,2 | 55,5 | 55,8 | 56,1 | 56,4 |
| Dress length ** | 92,5 | 93,5 | 94,5 | 95,5 | 96,5 | 97,5 | 98,5 | 99,5 | 100,5 | 101,5 |
| Shirt length ** | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 |
* Sleeve length includes the wrist or cuff.
** From the top of the shoulder at the neckline to the bottom of the garment at the front.
This product is a digital pattern in PDF format.
No physical item will be shipped. You’ll need to print it yourself after downloading.
If you only want to browse printed patterns, click here: Printed patterns

