The Box Box - Sewing Pattern - Merchant & Mills

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Dress it up or down, this boxy top or dress is going to be an essential wardrobe addition. The front pleat detail is enough to make this design stand out. The simple rouleaux loop-back neck closure reflects the simplicity of the silhouette.

Skill level; Intermediate

All seam allowances are 1.5cm unless stated otherwise and are included in the pattern. This is a multi-size paper pattern in an envelope, including sizes 6 – 18.

Suitable fabrics – Light to medium weight woven cottons or dress weight denims. Crisp or laundered linens. If you are a confident dressmaker you could use tencel linen or viscose linen noil.


You will need one 11-15mm button and matching thread. Fabric Requirements in cm (with or without nap) Top
Size 6 & 8 Size 10 – 14 Size 16 & 18
110cm wide 1.45M 1.7M 1.75M
120cm wide 1.45M 1.45M 1.5M
140cm wide 1M 1.45M 1.5M
150cm wide 1M 1M* 1.5M
Interfacing 0.2M 0.2M 0.2M

* for the size 14 it is a tight lay, if in doubt buy fabric for the larger size. Fabric

Requirements in cm (with or without nap) Dress

Size 6 & 8 Size 10 – 14 Size 16 & 18
110cm wide 2.65M 2.95M 3M
120cm wide 2.65M 2.7M 3M
140cm wide 2.65M 2.7M 3M
150cm wide 1.6M 2.7M 2.7M
Interfacing 0.2M 0.2M 0.2M


Finished Measurements

6 8 10 12 14 16 18
Bust 101.4 105.4 109.4 114.3 119.2 124.1 129
Top Length 56 56.5 57 57.5 58 58.5 59
Dress length 111.6 112.1 112.6 113.2 113.8 114.4 115
Sleeve Length 14.75 15 15.25 15.5 15.8 16.1 16.4


UK Sizing

Size 6 Size 8 Size 10 Size 12 Size 14 Size 16 Size 18
Waist 61cm/24″ 65cm/25.5″ 69cm/27″ 74cm/29″ 79cm/31″ 84cm/33″ 89cm/35″
Hips 86cm/34″ 90cm/35.5″ 94cm/37″ 99cm/38.75″ 104cm/41″ 109cm/43″ 114cm/44″
Bust 78cm/30.75″ 82cm/32.25″ 86cm/33.75″ 91cm/35.75″ 96cm/37.75″ 100cm/39.25″ 106cm/41.75″

Customer Reviews

Based on 111 reviews

Wonderful pattern thankyou, I must say though the dawn jeans fit very snug I made following my measurements a practice run if you will. They didn't take me long at all, the instructions are great! I will make again and size up. fast delivery and well packaged I will look too you again x

A happy return buyer!

Bought some elastics this time around. I’m happy with the quality of my purchases.


Best fabrics in Victoria.

Great little shop!

I ordered some patterns and fabric a few days apart from each other. Both arrived super quickly - only a few days! The patterns were exactly as shown and a lot of their patterns have extended sizes (HURRAY!). The fabric was high quality and the design very rich and unique.

So happy with service and quality. Has been marked as a new favorite site.

Excellent service

The service was so quick. I received the 2 patterns the next day. Thank you for processing my order so fast. I am making the cuff blouse and the box pleat dress from The Assembly Line.