Petit Bateau sizes are based on height in centimetres, not age, and the brand runs slightly fitted compared to similar products on the market. For baby pyjamas, we recommend checking your child's height and choosing the next size up if you're unsure. Our team at Billie le Kid is happy to help you find the right Petit Bateau dors-bien — in-store at Laurier Ouest, Sherbrooke Ouest in Westmount, and Mont-Tremblant, or online.

The Petit Bateau baby pyjama available at Billie le Kid covers newborn through 18–24 months depending on the style. The range includes footed and footless sleepsuits as well as the bodyjama (inventory confirmation required). Sizes follow height in centimetres, from 50 cm at birth up to 74–80 cm (to be validated against current Petit Bateau size chart). For any questions about the newborn Petit Bateau collection or sizing, our team is here to help in our boutiques on Laurier Ouest, Sherbrooke Ouest in Westmount, and Mont-Tremblant.