This chart applies only to costumes manufactured by Funworld. Each costume on toynk.com lists the manufacturer right below the product title.  The below size descriptions are provided by the manufacturer.  If you are unsure which size to choose,  we suggest buying one size larger.                     Funworld - Size Chart - Infant/Toddler                 Size Category Height(Inches) Weight               Bunting Up to 25" Up to 18lbs               6 to 12 Months 24" to 28" Up to 23lbs               12 to 24 Months 33" to 37" Up to 28lbs               18 to 24 Months 28" to 31" Up to 28lbs               Up to 24 Months Up to 30" Up to 28lbs               Toddler Small 24 Months to 2T 33" to 35" Up to 30lbs               Toddler Large 3T to 4T 38" to 46" Up to 36lbs               Child Sizes                   Size Category Height(Inches) Weight Waist  Chest           Small (4-6) 39" to 46" 35 to 45lbs 19" to 22" 22" to 25"           Medium (8-10) 49" to 54" 55 to 73lbs 23" to 25" 27" to 30"           Large (12-14) 55" to 60" 74 to 100lbs 24" to 26" 30" to 32"           Adult/Teen Female                   Size Category Height(Inches) Weight Waist  Chest           Teen (Juniors 0-9) 4'11"-5'6" 95-130 lbs. 24-27" 30-34"           Small/Medium (2-8) 5'-5'6" 100-135 lbs. 24-27" 32-36.5"           Medium/Large (8-14) 5'6"-5'11" 135-170 lbs. 28-33" 36-40"           Extra Large(18-20) 5'7"-5'11" 150-195 32"-42" 39"-48"           Standard 5'2"-5'11" 105-170 lbs. 25-33" 32-40"           Plus (16-24) 5'5"-5'11" 150-195 32-42" 39-48"           Adult Males                   Size Category Height(Inches) Weight Waist  Chest           Teen (14-16) n/a n/a n/a n/a           Standard 5'6"-6' 140-200 lbs 25-38" 33-45"           Plus    5'9"-6'3" Up to 300 lbs 42-46" 48-53"