Sisters is a television drama which aired on NBC for six seasons, from 1991 to 1996. The series was created by Ron Cowen and Daniel Lipman, who also created the Showtime series \"Queer As Folk\" and wrote the acclaimed Emmy and Peabody Award winning drama \"An Early Frost\", also for NBC. The show debuted on May 11, 1991 for a seven-episode test run and was subsequently renewed for the 1991 fall schedule.