The clearest giveaway is the look she gets when people catch up late. A compliment lands, and she does not grab it with both hands. Someone stretches the goodbye a little too long. Another person checks her reflection in the window beside her, thinking nobody caught it.
She almost smiles.
Not smug. Not surprised either. More like she has known for a while and is letting everyone else arrive in their own time. The clothes helped. The posture helped. But the part that makes her hard to ignore is that she no longer seems shocked by the effect she has.