The actress and her husband, composer Alec Puro, welcomed their second child on Friday, March 13, her rep confirms to PEOPLE exclusively.
Daughter Olive Mae Puro arrived six weeks early in Los Angeles, weighing 4 lbs., 10 oz. and measuring 18 inches long. She joins big sister Elliotte Anne, 3.
“Someone decided to join the world just a wee bit early. She couldn’t wait to meet us,” Sokoloff, 34, tells PEOPLE, adding that Olive will remain in the NICU for the time being. “We are so in love!”