Mabel is a 40-year-old married mother of two who attends a party at the Dalloway residence. She feels deeply insecure about her social standing and fixates on her new yellow dress, which she designed from one of her mother's old fashion books. She struggles to communicate her genuine feelings to others and frequently masks her low self-esteem behind polite silence, privately comparing herself to a trapped fly.

Clarissa Dalloway is the elegant hostess of the party Mabel attends. She represents the wealth, refinement, and ease that Mabel constantly measures herself against. As a hostess, she maintains the polite social conventions of the upper class, creating an environment that Mabel finds deeply intimidating.

Mr. Dalloway is Clarissa's husband and the co-host of the social gathering. Along with his wife, his home establishes the atmosphere of elegance and upper-class refinement that triggers Mabel's deep-seated anxieties about her own background.

Rose is a party guest who dresses perfectly in the height of fashion. She offers Mabel a compliment on her appearance, though Mabel interprets the remark as false and patronizing. Rose represents the effortless conformity that eludes Mabel.

Charles is a guest at the Dalloway party. When Mabel expresses unhappiness with her dress aloud, Charles responds with what Mabel perceives as mockery. His brief comment solidifies her feelings of inadequacy and causes her to view him as a malicious presence.

Robert is a partygoer who attempts to comfort Mabel. When she voices her insecurities aloud, he assures her that she looks fine. His assurance offers her no real comfort, and she quickly dismisses his words as insincere.

Mrs. Holman is an attendee at the party. Mabel views her as someone who constantly demands sympathy from others and greedily snatches up any attention she receives. Her presence adds to Mabel's overall exhaustion with the social gathering.

Miss Milan is the seamstress who crafted Mabel's new dress. During the fitting, Mabel felt a sense of genuine satisfaction and connection with her. Her workroom provides a sharp contrast to the wealthy atmosphere of the Dalloway party.