Follow our guide to find the right measurements.

We still encourage trying on at home as fit may differ per style.

Bust - Measure the fullest part of the bust while keeping enough room for two fingers underneath.
Waist - Measure below the ribcage and about two fingers above the belly button.
Un Deux Trois Size Guide

The fabric type you order can change the size in which she will feel the most comfortable. All of our fabrics have a different stretch to them! Some with lots of stretch, while others, are completely ridged.

For example, we offer the Cap Sleeve Dress in our non-stretch, jacquards (pictured below left). The jacquard has no stretch to it, while the texture (pictured below right) has a lot of stretch. Same style, yet different fabrics fit differently. You might need to go up a size if ordering the Cap Sleeve Dress in jacquards, since those fabrics have far less stretch, but it's important to get the right bust and waist measurement! We try our best to note the type of fabric content on each of our dresses.