Order by chest size: Newborn=15", 3 Months=16", 6 Months=17", 9 Months=17.5", 12 Months=18", 18 Months=19", 24 Months=20" * 2-piece set includes romper and bonnet. * Classic shirt collar, pleated bodice front, covered button trim. * Short sleeve, short leg. Button closure on back and crotch. * Hand wash. Hang to dry. Made in the USA.