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 "My Mom Jayne," Mariska Hargitay receives mom Jayne Mansfield's grand piano, a gift husband Peter Hermann tracked down for her 60th birthday.

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