"I can confirm that she is expecting," Hargitay's publicist, Erwin More, tells Reuters. No other details were immediately available.
Hargitay, 41, who plays NYPD Det. Olivia Benson on NBC's Law & Order: Special Victims Unit, met Hermann, 38, on the show, where he has a recurring role. The couple wed in Santa Barbara, Calif. in August 2004 in front of 200 guests.
"They're mad about each other," wedding planner Yifat Oren, told PEOPLE at the time. "And they're hilariously funny together."