New Addition

 is the 5th episode of the shows First season which was first broadcast on April 20, 1991.

Summary
Clarissa suspects that her parents are having another child when they plan to add a room to the house.

Cast

 * Melissa Joan Hart as Clarissa Darling.
 * Jason Zimbler as Ferguson Darling.
 * Sean O'Neal) as Sam Anders.
 * Elizabeth Hess as Janet Darling.
 * Joe O'Connor as Marshall Darling.