Wardrobe is the most visible signaling channel a professional has, and it does its heaviest work in the years before the next title arrives. After the promotion, the title itself carries the room. The wardrobe relaxes. It supports rather than leads. Before the promotion, the wardrobe is doing the lifting alone. The title is not on the email signature yet. The corner office is not on the door. The room has to be read on the suit.
The smartest professionals upgrade the wardrobe before the title catches up, not after. The reasoning is simple. The wardrobe is doing the most work in the eighteen months before a level change, when the candidate is being evaluated by people who do not yet know them. Once the title shows up, the wardrobe becomes discretionary. Before the title shows up, the wardrobe is one of the few variables the candidate can actually control.