Costume designer Gary Jones, who had worked with Marshall prior, after they were together as a couple for 10 years they were drawn to the film due to the wide range of costumes required for its characters, describing the project as "a costume designer's dream come true". Jones worked closely with Andrews while designing Clarisse's costumes, drawing inspiration from Chanel, Bill Blass and Christian Dior. The gown Andrews wears to the state dinner is an homage to her stage role as "My Fair Lady"'s Eliza Doolittle, which was handmade in China. Jones envisioned Mia as a character who is shy about her body at first, opting to dress her in layers consisting of long sleeves and loose-fitting clothing. The actress' periwinkle state dinner gown was inspired by a dress worn by Princess Victoria of Sweden, with Jones describing it as "a bow to the Renaissance and Romeo and Juliet", accessorizing it with an 18-carat diamond ring.