Kirsty and Rachel are excited to be entering a charity fashion show where children get to show off their own designs. Unfortunately, Jack Frost thinks everyone in the world should dress like him, and steals the Fashion Fairies' seven magical items to put his naughty plan into action! Everyone is starting to make their costumes for the fashion show auditions, but without Tyra the Dress Designer Fairy's magic tape measure, nothing fits. Kirsty and Rachel need to find it soon, or nobody's outfit will be good enough to enter.