Hermione hadn't really given any thought to how she would spend Halloween evening. Seeing as she had a Muggle flat she might just go to the local market and purchase some candies to give to trick-or-treaters. Either that or sit curled up with a good book.
"You will have to tell me all about in the days that follow," Hermione held a finger up to let Luna know to hold on for a moment before leaving. She then headed into her bedroom and pulled one of the garment bags out of her closet. "Here this will make it easier to travel with the dress."