Satin Pajama Set

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 pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries

satin
A cloth woven from silk, nylon or polyester with a glossy surface and a dull back. (The same weaving technique applied to cotton produces cloth termed sateen); Smooth and shiny, glossy. Particularly describing a type of paint
a smooth fabric of silk or rayon; has a glossy face and a dull back
Satin is a weave that typically has a glossy surface and a dull back. It is a warp-dominated weaving technique that forms a minimum number of interlacings in a fabric. Some definitions insist that the fabric is made from silk.
Smooth like satin

set
A group or collection of things that belong together, resemble one another, or are usually found together
put: put into a certain place or abstract location; "Put your things here"; "Set the tray down"; "Set the dogs on the scent of the missing children"; "Place emphasis on a certain point"
a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth"
fit(p): (usually followed by `to' or `for') on the point of or strongly disposed; "in no fit state to continue"; "fit to drop"; "laughing fit to burst"; "she was fit to scream"; "primed for a fight"; "we are set to go at any time"
A collection of implements, containers, or other objects customarily used together for a specific purpose
A group of people with common interests or occupations or of similar social status