Meghan Trainor announced that she's pregnant with her second child during Monday's episode of the 'Today' show. The singer shared her news, first announcing that she was writing a motherhood advice book, 'Dear Future Mama.' And when co-host Hoda Kotb opened the book, there was a photo of a sonogram revealing that Meghan is pregnant with baby no. 2, due this summer. She and her husband, Daryl Sabara, are already parents to 1-year-old son Riley.