Size Chart
The average size baby is born 7.5 lbs and grows approximately 1.5 to 2 lbs each month, and 1 to 1 ½ inches in height each month.
3-6 months = Chest: 12-14 inches Height: 20-24 inches Weight: 12-17 lbs
Size translation: Buy this size when you want Mom and Dad to dress the babe up in your purchase for Instagram stories; and, for those fun early refrigerator magnet pictures with Granny and Grandpa!
6-12 months = Chest: 14-16 inches Height: 25-28 inches Weight: 17-21 lbs
Size translation: Buy this size when you cannot make the baby shower. Mom and Dad will appreciate it!
12-18 months = Chest: 16-18 inches Height: 29-31 inches Weight: 22-24 lb
Size translation: Buy this size when you cannot remember when the baby was born—but you think--in the last year and a half! Or, pop into the 2T toddler t-shirt section.