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,

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.

Special Victims Unit" actor created an emotional and revealing documentary about her mother, Jayne Mansfield, who died when Hargitay was just 3 years old.