The HBO Original project about Jayne Mansfield is directed and produced by Hargitay and features interviews the "Law & Order: SVU" star conducted with her siblings, biological father and stepmother about the mom Hargitay never got the chance to really know.

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

I couldn’t believe that this truth, this bombshell for me, didn’t ever come to light," says the ‘Law & Order: SVU’ star about going public with her biological father’s identity in an HBO documentary on her mother,