44-year-old Masterson and her husband Jeremy Davidson have been married for 5 years, and already have a 17-month-old son.
“We are four months along. So balancing career and family is becoming increasingly challenging for me,” Davidson, who stars on “Army Wives,” tells E! Online. “And in five months we are going to have three kids under the age of 2. We are in happy shock about it.”
The couple are expecting the arrival of their twins in October.