For more on Meghan Trainor and her new book Dear Future Mama, pick up the new issue ... t wait for Riley to have a sibling. "I look at my husband and go, 'We are so lucky,'" says Trainor.

Meghan Trainor brought festive fun to the stage, performing her holiday duet “Wrap Me Up” with Jimmy Fallon. She rounded out her set with chart-toppers like “Dear Future Husband” and ...