Sizing guide
If you would like any advice on sizing, please do not hesitate to contact us via customerservice@issoir.com or on 0203 3576 0991, where we will respond during opening hours.
How to measure
For the best fit, we recommend that you find a similar piece of clothing that fits you well, measure it as follows and cross reference with the guides below:
Trousers and Shorts
Waist: Lay the garment flat and measure the top of the waistband from side to side edge.
Hip: Lay the garment flat and measure from side edge to side edge. 15cm under the waistband.
Tops and Dresses
Bust: Lay the garment flat and measure from side seam to side seam. 2.5cm down from the underarm.
Hem: With the garment laid flat, measure from side seam to side seam. If the hemline is curved, measure straight across from side seam to side seam.
Garment Measurements
The Gia Tuxedo Trouser
Please note all measurements listed are garment measurements, measured with the garment laid flat.
This is a high waisted style which is designed to sit on the true waist.
Fits true to size.
Size (UK) |
Trouser Waist |
Trouser Hip (15cm below waistband) |
Inseam |
6 |
32.8cm |
41.8cm |
81cm |
8 |
34cm |
43cm |
81cm |
10 |
36.5cm |
45.5cm |
81cm |
12 |
39cm |
48cm |
81cm |
14 |
41.5cm |
50.5cm |
81cm |
16 |
44cm |
53cm |
81cm |
The Gia Kaftan
This piece has generous kaftan style proportions and is designed to fit the below sizes.
If you are between sizes (8-10), you may wish to take the size small. If you are between sizes (10-12) you may wish to take the size medium depending on your desired fit.
Size (UK) |
Gia Kaftan Size |
6 |
Small |
8 |
|
10 |
|
10 |
Medium |
12 |
|
14 |
Large |
16 |
The Chloe Top
Please note all measurements listed are garment measurements, measured with the garment laid flat. Bust measurement is taken 2.5cm below armhole.
This piece is adjustable around the waist. When untied it is loose fitting around the waist and bust and is designed to be cinched in to your liking.
Fits true to size.
Size (UK) |
Bust (2.5cm below armhole) |
Hem |
6 |
46cm |
61cm |
8 |
48.5cm |
63.5cm |
10 |
51cm |
66cm |
12 |
53.5cm |
68.5cm |
14 |
56.5cm |
71.5cm |
16 |
59.5cm |
74.5cm |
Sara Short
Please note all measurements listed are garment measurements, measured with the garment laid flat.
This is a high waisted style which is designed to sit on the true waist.
Fits true to size.
Size (UK) |
Short Waist |
Short Hip (15cm below waistband) |
Outside Short Length |
6 |
30cm |
45cm |
36cm |
8 |
32.5cm |
47cm |
37cm |
10 |
35cm |
50.5cm |
38.5cm |
12 |
37.5cm |
53cm |
39cm |
14 |
40cm |
56cm |
39.5cm |
Bianca Camisole
Please note all measurements listed are garment measurements, measured with the garment laid flat.
Bust measurement is taken 2.5cm below armhole.
If you are between sizes and would like to wear this as loungewear, you may consider the size up. If you would like a versatile piece which can be worn in and out, take your true size.
Size (UK) |
Bust (2.5cm below armhole) |
Hem |
6 |
40cm |
50cm |
8 |
41cm |
53cm |
10 |
42cm |
55cm |
12 |
44cm |
57cm |
14 |
45cm |
59cm |
The Scarlett Slip Dress
Please note all measurements listed are garment measurements, measured with the garment laid flat.
Bust measurement is taken 2.5cm below armhole.
If you are between sizes, are purchasing to wear out, and want this to be be a little more fitted, you may wish to take your smaller size. If you are purchasing as a nightwear slip, please take your regular size.
Size (UK) |
Bust (2.5cm below armhole) |
Waist |
Hem |
6 |
39cm |
46cm |
59cm |
8 |
41.5cm |
48cm |
61cm |
10 |
44cm |
50cm |
64cm |
12 |
46.5cm |
52cm |
66cm |
14 |
49cm |
54.5cm |
69cm |
The Lizzie Trouser
Please note all measurements listed are garment measurements, measured with the garment laid flat.
This is a high waisted style which is designed to sit on the true waist.
Fits true to size.
Size (UK) |
Trouser Waist |
Trouser Hip (15cm below waistband) |
Inseam |
6 |
30cm |
45cm |
72cm |
8 |
32.5cm |
48cm |
72cm |
10 |
35cm |
50.5cm |
72cm |
12 |
37.5cm |
52.5cm |
72cm |
14 |
40cm |
54.5cm |
72cm |
The Serena Robe
This piece is one size, and its generous kimono style proportions are designed to fit the below sizes.
Size (UK) |
Serena Size |
6 |
ONE SIZE |
8 |
|
10 |
|
12 |
|
14 |
|
16 |