What is Rebecca Howe's sister's first name?

Rebecca Howe's sister's first name is Susan.

Susan Howe appears in the Cheers episode “Sisterly Love,” where Marcia Cross plays Rebecca’s estranged sister. The character is described as an actress and former Miss San Diego who has a habit of stealing Rebecca’s boyfriends, giving the sisters’ relationship its comic tension.

Rebecca herself, played by Kirstie Alley, joined Cheers in season 6 after Shelley Long’s departure as Diane Chambers. Unlike Diane, Rebecca began as a corporate-minded bar manager before the writers developed her into a more neurotic and romantically frustrated character.

Susan is easy to confuse with other women connected to the show, including Diane Chambers, Rebecca’s predecessor at Cheers, and Carla Tortelli, the bar’s longtime waitress. Susan is Rebecca’s family member, not a regular member of the Cheers staff, and her role is limited to the “Sisterly Love” storyline.