**Fans of Shannon Hale’s Princess Academy series and budding fashionistas everywhere will love this charming, delightful middle-grade novel about two girls with a talent for dressmaking set in 1920s London.** As Myrtle Mathers and Sylvia Cartwright know, the perfect dress can change everything. When Myrtle leaves her family’s tailoring shop to work as a lady’s maid in the grand home of the aristocratic Cartwright family, she thinks her days of sketching and stitching are over for good. That is until the spirited Sylvia Cartwright runs into a big problem–her older sister Delphine’s debutante ball is about to be ruined by a truly horrendous dress. Desperate, Sylvia calls on Myrtle to help her save the night, and a serendipitous partnership begins. Their design for Delphine catches the eyes of all of London’s debutantes, including the prominent Agapantha Portland-Prince, who has the whole city buzzing about what she will wear to her extravagant ball. So when she practically begs Myrtle and Sylvia to dress her, the two girls make a plan: create something special for Agapantha without revealing their true identities. If the Cartwrights find out what Myrtle and Sylvia are up to, it could spell disaster for the girls’ futures. But as it turns out, Agapantha is looking for more than just a gorgeous outfit–she needs a disguise that will help her escape high-society life forever. And for Myrtle and Sylvia, what starts out as a plan to prove their design prowess soon becomes a secret mission to defy expectations. In this fabulous, fantastical adventure through 1920s London, author Lucy Ivison introduces a delightful new series about the magic of friendship, fashion, and being yourself.