In the show, Billingsley often could be seen doing household chores wearing pearls and earrings. The pearls, which in real life were Billingsley's trademark, were, in turn, her idea to have her alter ego wear on television. The actress had what she termed "a hollow" on her neck and thought that wearing a strand of white pearls would lighten it up for the cameras. In later seasons, she started wearing high heels to compensate for the fact that the actors playing her sons were getting taller than she was. The pearl necklace was so closely associated with the character that an entire episode of the sequel series dealt with the necklace when it was lost. Billingsley had one regret about the show's lasting success: residual payments ended after six reruns in standard 1950s actors' contracts.