When he arrived at the Entrance Hall at eight o'clock that night, he found an unusually large number of girls standing there, all of whom seemed to be staring at him resentfully as he approached Luna. She was wearing a set of spangled silver robes that was attracting a certain amount of giggling from the onlookers, but otherwise she looked quite nice. Harry was glad, in an case, that she had left off her radish earrings, her Butterbeer-cork necklace and her Spectrespects.
'Hi,' he said. 'Shall we get going then?'
'Oh, yes,' she said happily. 'Where is the party?'
'Slughorn's office,' said Harry, leading her up the marble staircase away from all the staring and muttering.