Labrador Baby one-piece My brother

My brother is a Labrador Retriever Baby dog Rompers My sister is a Labrador Baby one-piece  Cute baby dog clothes baby gift 

SIZE TABLE
 

US Size	Bust(cm)	Length(cm)	Sleeve(cm)	Kids height(cm)	Kids weight(kg)
3M	19	38	6	58	4.6
6M	20	40	6.5	64	6.5
9M	21	42	7	70	8.3
12M	22	44	7.5	75	10.1
18M	23	46	8	80	11.7
24M	24	48	8.5	85	13

Size measured by ourselves

sometimes has some errors but always within 1-3cm