The term boudoir comes from French and is basically quite old. It derives from the French word “bouder”, which means “to be in a bad mood” or “to sulk”.
In its original form the boudoir describes a small, but elegantly furnished room into which the ladies of the house withdrew if necessary.
Already at the time of Louis XVI, the boudoir served women in France as an important retreat. In the past, the boudoir was a kind of sulking corner for women to retreat to. Today the word simply stands for the dressing room. The term fits quite well, because a dressing room is just as intimate as a boudoir photograph.