Size/Age Range Weight
3 Months 0-7 lbs
6 Months 12-16 lbs
9 Months  16-18 lbs
12 Months 18- 23 lbs 
18 Months  23-26 lbs
24 Months  26- 29 lbs 
2 T  29-31 lbs
3 T  31- 34 lbs
4 T  34- 38 lbs 
Baby Sizing Chart Diagram