Fashion Lala: The Story of the Harbour Light (1988)

Eleven-year-old Miho wants to be a fashion designer and is eager to make a dress for her little sister, Shuri, to help her win the Dancing Queen contest. When Miho's stupid aunt ruins the dress, the Fairies of Fanland hear her prayer and transform her into the 16-year-old-old Lala, a top designer