The meaning of Dressing room in dream | Dream interpretation
To dream about a dressing room suggests that you are going through a transition period in your life.
If you dreamed of putting on a new outfit in one, good luck is ahead for you. However, if you dreamed of getting/being undressed in one, or being trapped in one, you will have setbacks and may not get everything you want.
(Dresser; Fitting room; Wardrobe) A dressing room means what a comb represents in a dream.
A dressing room in a dream also represents a husband for a single girl, or a chaste and a hard-working wife for a single man.
(Also see Comb; Wardrobe)
The dressing room is essentially about preparation for some heightened form of expression. Look to where in your life you are gearing up to be expressive in a particular way. Additionally, you may be hesitating to take risks around putting yourself out there by staying too long in the dressing room.