Mariska Hargitay's stepmother, Ellen Hargitay, shares in the "My Mom Jayne" documentary the story of what Jayne Mansfield once told her in a dream.

In her new film, 'My Mom Jayne,' Mariska Hargitay reveals that she can finally see traces of herself in her late mother, Jayne Mansfield, which also extends to Hargitay's longest-running role as Olivi