The size 5Y in Petit Bateau is closest to the following:
Brand Label Weight (lbs) Height (inches)
American Apparel 4 years 35 - 41 lbs 36 - 40 inches
BabyBoden 2-3 years - 35.5 - 38.5 inches
Burt's Bees Baby (Target) 4T 36 lbs 39 - 41.5 inches
Carters 4T 34 - 38 lbs 38.5 - 41.5 inches
Cherokee (Target) 4T 32.5 - 37 lbs 39 - 41.5 inches
Circo (Target) 4T 32.5 - 37 lbs 39 - 41.5 inches
Gap 3T 33 - 36 lbs 36 - 39 inches
Gymboree 3T 32 - 35 lbs 36 - 39 inches
H&M 4-5 years - 43 inches
Hanna Andersson 100cm 31 - 38 lbs 38 - 42 inches
Hatley 4 - 41 inches
J.Crew/ Crewcuts 4 34.5 - 39.5 lbs 39 - 42 inches
LLBean 5-6/M - 41 - 44 inches
Lands End 4/ S 34 - 38 lbs 40 - 42 inches
Marimekko 5 yrs/ 110 cm - 43 inches
MiniBoden 5y - 43.5 inches
Old Navy 3T 33 - 36 lbs 36 - 39 inches
OshKosh 4T 34 - 38 lbs 38.5 - 41.5 inches
Petit Bateau 5Y 32 - 36 lbs 42.5 inches
Ralph Lauren 3T 32 - 35 lbs 37 - 39.5 inches
The Children's Place 4T 32 - 35 lbs -
Tucker + Tate (Nordstrom) 4T 34 - 39 lbs 38.5 - 41.5 inches
Wal-Mart 4T 34.4 - 38 lbs 38 - 41.5 inches
Zutano 3T 33 - 36 lbs 36 - 39 inches
childhoods 3T 33 - 36 lbs 36 - 39 inches
janie and jack 4 36 - 40 lbs 40 - 44 inches
tea 3/XS 33 - 36 lbs 36 - 39 inches
vineyard vines 4T 36 - 40 lbs 39 - 42 inches