It's the day before the big show, and Millie and her friends, the Ballet Bunnies, have a busy day planned ahead. Between a visit to the Costume Shop, a delightful cup of hot chocolate, and a successful dance rehearsal, everything seems to be going to plan. Until Millie checks her bag and finds that Trixie is missing! It's time for Millie to retrace her footsteps . . .Ballet Bunnies series:• Ballet Bunnies: The Big Audition (ISBN: 9780192774897)• Ballet Bunnies: Let's Dance (ISBN:9780192774866)• Ballet Bunnies: The New Class (ISBN:9780192774859)• Ballet Bunnies: Millie's Birthday (ISBN:9780192774873)• Ballet Bunnies: Trixie is Missing (ISBN:9780192774903)• Ballet Bunnies: The Lost Slipper (ISBN:9780192774880)