Marshall cast several of his own family members in supporting and minor roles. Kathleen Marshall, Marshall's daughter, plays Clarisse's secretary Charlotte Kutaway. Charlotte's surname is only revealed during the closing credits; Marshall explained that the character was named after how often she is used in cutaway shots, and her role references the filmmaking technique in which "whenever anything goes wrong in the film, you cut away to someone". Marshall's wife appears as a ball guest, while his twin granddaughters Lily and Charlotte, the same granddaughters who inspired him to cast Hathaway, appear as a pair of schoolgirls asking for Mia's autograph. Marshall himself has a brief cameo during the Genovian Independence Day Ball, alongside sister Penny. San Francisco Mayor Willie Brown portrayed himself in a cameo appearance, during which he is briefly interviewed upon arriving at the same ball.