describe the girl when montag first sees her

From the text:

"The autumn leaves blew over the moonlit pavement in such a way as to make the girl who was moving there seem fixed to a sliding walk, letting the motion of the wind and the leaves carry her forward. Her head was half bent to watch her shoes stir the circling leaves. Her face was slender and milk-white, and in it was a kind of gentle hunger that touched over everything with tireless curiosity. It was a look, almost, of pale surprise; the dark eyes were so fixed to the world that no move escaped them. Her dress was white and it whispered. He almost thought he heard the motion of her hands as she walked, and the infinitely small sound now, the white stir of her face turning when she discovered she was a moment away from a man who stood in the middle of the pavement waiting."