The following pictures and measurements are to help you determine which size is best for you.  We suggest finding a shirt or onesie that fits you or your child well and measuring it to compare to these sizes.  Please note that measurements are not exact and there are slight variations between shirts of the same size.  Shirts washed and dried in high heat may shrink, so account for about 1" of shrinkage after washing.

Infant Onesie Sizes

Important note: onesies are measured from the top of the shoulder down to the snaps on the front of the crotch area.

Toddler Sizes - American Apparel

Important note: for most Toddler shirts, assume the Gildan brand (see below) unless it is specifically specified as American Apparel. There are size differences between Gildan and American Apparel.

Toddler Sizes - Gildan

Important note: for most Toddler shirts, assume the Gildan brand unless it is specifically specified as American Apparel. There are size differences between Gildan and American Apparel.

Youth Sizes

A child who wears a 5T, will likely fit best in a youth XS.  Additionally, note that a Youth XL is about the same size as an Adult Unisex Small, but a little bit wider, whereas the Adult Small will have a more narrow fit.

Adult Unisex