Zizzi sizes run from a UK 12 / EU 40 (size XS) up to a UK 36 / EU 64 (size XXXL), developed to European measurement standards. Use the chart below to find your size by measuring your chest, waist and hip — not by matching your usual UK size from another brand, since fit varies between styles (see jeans fit guide below).
How to measure yourself
- Chest: measure at the fullest place, keeping the tape horizontal and close to the body.
- Waist: measure at the smallest point of your waist, with the tape horizontal all the way around.
- Hip: measure at the widest place around your hips, tape horizontal and close to the body.
- Measure directly on the body without clothes on for the most accurate result.
- Leave room for one finger between the tape and your body so clothes fit comfortably without being tight.
Zizzi size chart (cm)
| UK Size | Letter Size | EU Size | Chest (cm) | Waist (cm) | Hip (cm) |
|---|---|---|---|---|---|
| 12 | XS | 40 | 102 | 84 | 106 |
| 14 | S | 42 | 107 | 90 | 111 |
| 16 | S | 44 | 112 | 95 | 116 |
| 18 | M | 46 | 117 | 101 | 121 |
| 20 | M | 48 | 122 | 106 | 126 |
| 22 | L | 50 | 127 | 112 | 131 |
| 24 | L | 52 | 132 | 117 | 136 |
| 26 | XL | 54 | 137 | 123 | 141 |
| 28 | XL | 56 | 142 | 128 | 146 |
| 30 | XXL | 58 | 147 | 134 | 151 |
| 32 | XXL | 60 | 152 | 139 | 156 |
| 34 | XXXL | 62 | 157 | 145 | 161 |
| 36 | XXXL | 64 | 162 | 150 | 166 |
Source: Zizzi official size guide.
Jeans & trousers — which fit is right for you?
Zizzi names each jeans style after the fit, so it's worth knowing which one you're looking at before choosing a size:
| Style name | Fit | Waist height |
|---|---|---|
| Amy | Super slim fit | High waist |
| Emily | Slim fit | Regular waist |
| Vilma | Slim fit | High waist |
| Gemma | Regular fit | High waist |
| Ellen | Bootcut fit | High waist |
| Mille | Mom fit | High waist |
| Kiana | Straight fit | High waist |
| Vera | Straight fit | Regular waist |
| Myra | Wide fit | High waist |
For jeans and trousers, size is based on your waist and hip measurement together rather than chest. If your waist and hip measurements point to two different sizes, we recommend sizing up for comfort, since most styles have some stretch.
Frequently asked questions
Does Zizzi run true to size?
Yes, when you measure yourself and match the chart above, Zizzi sizing runs true to its own scale. The main thing to watch for is style: super slim fits like Amy jeans sit closer to the body than relaxed fits like Myra, so the same waist measurement can feel different depending on the style.
What size am I in Zizzi if I'm a UK 18?
A UK 18 corresponds to Zizzi size M / EU 46, with a chest of around 117cm, waist of 101cm and hip of 121cm.
Is Zizzi S/M/L/XL the same as the numbered sizes?
Yes — the letter sizes and numbered EU sizes describe the same size run. S covers EU 42–44, M covers EU 46–48, L covers EU 50–52, and so on. Which label you see depends on the product, not the brand's underlying sizing.
Which Zizzi jeans fit should I choose?
If you prefer a closer fit through the leg, Amy (super slim) or Emily (slim) are the closest-fitting. For a relaxed, comfortable fit, Myra (wide) or Mille (mom fit) give more room through the leg. Ellen (bootcut), Kiana and Vera (straight) sit in between.
What if my waist and hip measurements suggest different sizes?
Choose based on the larger of the two measurements, since most styles include some stretch and it's easier to take a roomier fit in than to add room to a tight one.
Last updated: 15/07/2026
