The Unforgettable star and her boyfriend, Microsoft executive Shawn Sanford, welcomed their first child together on Monday, April 22, her rep confirms to PEOPLE exclusively.
Daughter Violet Grace Devereux Sanford arrived at 7:57 a.m., weighing in at 6 lbs., 12 oz. and measuring 19.5 inches long. She joins big brother Jackson, 5,Montgomery's son from a previous relationship.
"We are overjoyed with the arrival of our beautiful angel and filled with gratitude that she is happy, healthy and thriving," the couple tell PEOPLE.