Victorian Nightshirt

nightshirt
A long, loose shirt worn to bed
nightclothes worn by men
A nightshirt is a garment intended for sleeping in. It is somewhat longer than most regular shirts, reaching at least down to the thighs, but usually shorter than a dress or robe, leaving some of the legs uncovered.
A long, loose shirt worn in bed.

victorian
priggish: exaggeratedly proper; "my straitlaced Aunt Anna doesn't approve of my miniskirts"
a person who lived during the reign of Victoria
A person who lived during the Victorian period
of or relating to Queen Victoria of Great Britain or to the age in which she ruled; "Victorian morals"