Baby's mother, Marjorie Houseman, was played by actress Kelly Bishop. Like Jerry Orbach, Bishop is a veteran theater actress who has been working consistently in Hollywood since the '60s. She gained recognition for her Tony Award-winning performance in "A Chorus Line" before playing the role of Marjorie.

After the release of "Dirty Dancing," Bishop continued to work in theater, film, and television. Modern day audiences know Bishop well for her role as Emily Gilmore on "Gilmore Girls," a role she played for all seven seasons of the show as well as the Netflix revival "Gilmore Girls: A Year in the Life." Some of Bishop's other notable television roles include Fanny Flowers on the ABC Family drama "Bunheads" and her portrayal of Eleanor Lambert on Netflix's "Halston."

Outside of acting, Bishop was married twice. Her second husband, former ESPN and CNN talk show host Lee Leonard, died in 2018.