The Assembly Line
The Assembly Line Oversized Shirt
The Assembly Line Oversized Shirt
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Oversized Shirt by The Assembly Line
The Design
The Oversized shirt sewing pattern by The Assembly Line is based on a classic style but with an oversized fit. It features relaxed shoulders, a traditional shirt collar or standing straight collar, a rear box pleat and side seam pockets.
Make More
- Sew it with a standing straight collar
- Shorten it and take away the pockets if needed
- Lenghten it and use it as a shirt dress
Recommended Fabrics
Suggested fabrics are light to medium light weight fabrics such as cotton, silk, lawn, linen, crepe de chine or wool crepe.
Supplies and Notions
- Matching thread
- 11 shirt buttons, approx 1 cm
- Fusible interfacing
Sizing
XS-L; XL-3XL
Both models are wearing a size S, the model in white is 170 cm tall and the model in grey is 178 cm tall.
The oversized shirt has a boyfriend fit, which makes it roomy. Use your chest measurement for sizing.
Level of Difficulty
Advanced
Fabric Required
140-150 cm fabric width
XS 1.8 m / S 1.9 m / M 2.0 m / L 2.1 m / XL 2.2 m / 2XL-3XL 2.3 m
110-120 cm fabric width
XS 2.4 m / S 2.5 m / M-L 2.6 m / XL-3XL 3.0 m
Finished Garment Measurements

XS | S | M | L | XL | 2XL | 3XL | |
A. Chest (cm) | 113 | 121 | 129 | 137 | 145 | 157 | 169 |
B. Bottom (cm) | 121 | 129 | 137 | 145 | 153 | 165 | 177 |
C. Length c.b. (cm) | 86,5 | 87,5 | 88,5 | 89,5 | 90,5 | 91,5 | 92,5 |
D. Sleeve length fr. c.b. | 76 | 79 | 82 | 85 | 86 | 87 | 88 |
E. Bicep (cm) | 38,5 | 40,5 | 42,5 | 44,5 | 46,5 | 50 | 54 |
F. Collar around (cm) | 38 | 40 | 42 | 44 | 45,5 | 47,5 | 49 |







