SVU' star talks about her movie star mother Jayne Mansfield in "My Mom Jayne" and her once-secret biological father Nelson Sardelli.

In her debut as a documentary director, Mariska Hargitay explores the life of her mother, the Hollywood actor Jayne Mansfield, who died at 34.

Mariska Hargitay shared how her biological father, Nelson Sardelli, reacted to her new documentary, My Mom Jayne. "My birth father … was thrilled because he'd been living with this secret, too, all these years,