A girl appeared at the senate at the Winter Festival, dancing in a white dress. She was- what?- about seventeen years old. Daughter of the senator of Alderaan, Bail Organa, she has been brought up since childhood to look and behave like a princess. As she dances at the masquerade with an amused and care free smile and an ever so slightly bored expression on her face she soon attracts the looks of the surrounding people. Dancing and smiling and with her dark hair flowing she causes some of the onlookers to whisper to their neighbours that she reminds them of a beautiful, if slightly outspoken, girl who had been about - what? - sixteen when she danced in the blue dress at the Winter Festival with her dark hair flowing.
As Darth Vader looks on, cloaked in the shadows, he is also reminded of this girl and like many of the onlookers tells himself that it is a coincidence, nothing more, and so turns his back and stalks out of the room.