She waited anxiously for the tone. The instructions for the Polyjuice party had been very specific. The potion was to be taken by everyone at the same time when the chime sounds. Then the sound would ring at every hour when they would all need to take the potion again. She chose a set of emerald, green lingerie and a strappy green silk dress with some bejewelled sandals and set them on the bed. She wasn’t sure how drastic the change would be, so she stripped off her own clothes and slipped on a dressing gown.