Keri Russell is a mom again! The stunning 40-year-old gave birth to her first child with her boyfriend and The Americans costar, Matthew Rhys, in May. While they didn't disclose any information at first, the actress couldn't help but gush about her newborn during an appearance on Today on Friday, revealing that they have a healthy baby boy named Sam. "He's so good," she told Matt Lauer. "He's big and fat and nice." Keri, who started dating Matthew in early 2014, is already mom to daughter Willa, 4, and son River, 8, with her ex-husband, Shane Deary. Congratulations!