Easy Sizing Chart:

NEWBORN 6-9LBS

3 MONTHS 10-12LBS

6 MONTHS 12-16LBS

12 MONTHS 16-18LB

18 MONTHS 18-20LBS

24 MONTHS 20-30LBS

 

Use of World Health Organization and CDC Growth Charts for Children Aged 0–59 Months in the United States

http://www.cdc.gov/mmwr/preview/mmwrhtml/rr5909a1.htm

Growth Charts – WHO Child Growth Standards

http://www.cdc.gov/growthcharts/who_charts.htm

Growth Charts – WHO Charts – Data Table for Girls Weight and Head Circumference

http://www.cdc.gov/growthcharts/who/girls_weight_head_circumference.htm

Growth Charts – WHO Charts – Data Table for Boys Weight and Head Circumference

http://www.cdc.gov/growthcharts/who/boys_weight_head_circumference.htm

Growth Charts – WHO Charts – Data Table for Boys Length and Weight

http://www.cdc.gov/growthcharts/who/boys_length_weight.htm

Growth Charts – WHO Charts – Data Table for Girls Length and Weight

http://www.cdc.gov/growthcharts/who/girls_length_weight.htm