updated 04/07/2011 AT 2:00 PM ET
•originally published 04/07/2011 AT 12:00 PM ET
When it came time for Mariska Hargitay and husband Peter Hermann to choose a name for their 1-week-old daughter, the entire family got involved.
“We all talked about names because everything is a family decision in our house,” says Hargitay.
That meant also consulting her 4½-year-old son, August, for ideas. “I threw out my name and he threw out his name and I said, ‘August, why do you get to name the baby?’ And he said, ‘Because it’s my idea!’ ” the Law & Order: Special Victims Unit, 47, says with a laugh.