I am Cassiopée an easy to make, easy to wear dress. Any fabric suits me and you can reinvent me ad infinitum to match your every mood. You and me together we will dazzle everyone like two shooting stars lighting up the sky.

Level : Simple

Sizes : 36 to 46 (see sizing guide below)

Seam allowances: Included

Collection : I AM A Star, I AM Dreaming





All seam allowances are included in the pattern.

The different pieces don’t overlap with each other. Once printed and assembled, simply cut the pattern at your size and start sewing.

The folder contains the digital sewing pattern in A4, US Letter and A0 formats along with a step by step illustrated explanation guide.

Digital pattern formats:

A4 and US Letter – print at home – 21 sheets

A0 file (aka: copyshop, printshop, wide files) – print at a copy shop – 2 sheets

The file will be emailed to you upon payment. You will also be able to access the file anytime on your account.

Size 36 to 46. See sizing guide below.


All seam allowances are included in the pattern.

The pattern is enclosed in an envelope. It contains the sewing pattern along with a step-by-step illustrated explanation guide.

The different pieces overlap with each other so you will need to trace the pattern on paper. If you prefer a ready-to-cut pattern, try the pdf version as pieces do not overlap with each other.

Size 36 to 46. See sizing guide below.


Plain weave cotton, crêpe, chambray, denim, corduroy, wax, flannel, linen, viscose and much more.


3 3/16 yards by 55” wide

3 5/16 yards by 40″ wide




Stature: 1m65 / 5 feet 5 inches

I AM Patterns women sewing pattern measurement chart
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We’ve been asked countless time if Cassiopée could be sewn in jersey fabrics. It’s now possible with the complimentary extension. Download the instructions to sew yourself a very cosy Cassiopée dress.

Discover the latest pattern hack of your favourite dress. We show you how to create a unique lace block at the back. Follow the guide to make yours.

Autumn, winter, spring, summer, Cassiopée is perfect in all seasons. The original model features 3/4 sleeves. We now propose a short sleeve version, which should make you want to sew even more Cassiopée dresses.


Follow our step by step guide to sew your Cassiopée dress. You will find the same explanations as on the booklet. It is also accompanied with videos made by Marie-Claire Idées Magazine. Although they are in French you should be able to understand what to do.


Very simple and fast to sew and it’s very comfortable. I think I’ll make a hundred of those!

The Cassiopée dress by I Am patterns is a safe bet that you can make again and again. And it’s so enjoyable to wear!!!

An extremely fast pattern to sew. I recommend it if you’ve just started sewing or if you just want to make a dress in no time!


I AM Patterns patron de couture Cassiopée robe froncée à la taille et manches chauve-souris
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I AM Patterns patron couture Cassiopee Robe froncee
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