In her new documentary "My Mom Jayne," now on HBO Max, the "Law & Order: SVU" star opens up about the famous mother she barely had a chance to know.

On June 29, the longtime Law & Order: Special Victims Unit star honored her late mom, Hollywood icon Jayne Mansfield, by sharing two never-before-seen throwback photos of her and her then-toddler son August visiting her mother's grave.

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.