In episode 4 of the spin-off 90210, Kelly and Brenda crack a joke about being back at West Beverly and still hearing "Donna Martin Graduates." Also, in conversation Kelly and Brenda mention that Donna has a baby and that it is "so cute." It is revealed that Donna has returned to Beverly Hills after experiencing a rough patch in her relationship with David. Later on, Donna finds herself in a dilemma when she must decide between returning to Japan and being with David or moving back to Beverly Hills and bringing their daughter, Ruby, with her.
