Infant Pajamas

pajamas
(pajama) (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers
Pajamas, also spelled pyjamas (see also spelling differences) can refer to several related types of clothing. The original paijama are loose, lightweight trousers fitted with drawstring waistbands and worn in South and West Asia by both sexes.
A suit of loose pants and jacket or shirt for sleeping in
(pajama) a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries
A pair of loose pants tied by a drawstring around the waist, worn by both sexes in some Asian countries

infant
A very young child or baby
baby: a very young child (birth to 1 year) who has not yet begun to walk or talk; "the baby began to cry again"; "she held the baby in her arms"; "it sounds simple, but when you have your own baby it is all so different"
Denoting something in an early stage of its development
(infancy) the early stage of growth or development
An infant or baby is the very young offspring of humans. A newborn is an infant who is within hours, days, or up to a few weeks from birth.
A person who has not attained legal majority