The size 7 in Ralph Lauren is closest to the following:
Brand Label Weight (lbs) Height (inches)
American Apparel 8 years 49 - 52 lbs 48 - 50 inches
Burt's Bees Baby (Target) 7 53 lbs 48 - 51.5 inches
Cherokee (Target) 7 48.5 - 54 lbs 47 - 48.5 inches
Circo (Target) 7 48.5 - 54 lbs 47 - 48.5 inches
H&M 7-8 years - 50 inches
Hanna Andersson 120cm 45 - 55 lbs 46 - 50 inches
Hatley 7 - 50 inches
J.Crew/ Crewcuts 6 46.5 - 54.5 lbs 45 - 49 inches
LLBean 8/S - 49 - 52 inches
Lands End 7/L 49 - 54 lbs 47 - 49 inches
Marimekko 8 yrs/128 cm - 51 inches
MiniBoden 8y - 50.5 inches
Petit Bateau 10Y 48 - 53 lbs 54.5 inches
Ralph Lauren 7 49 - 55 lbs 49 - 51.5 inches
tea 7/M 51 - 61 lbs 48 - 51 inches