Meghan Trainor: Meghan Trainor. Actress: Meghan Trainor: All About That Bass. Meghan Trainor is a Grammy-winning American pop singer known for such smash hits as "Lips Are Moving" and "All About That Bass." Born on December 22, 1993, Meghan Trainor was raised on Nantucket Island and spent her childhood surrounding herself with music, learning to play various instruments and writing her own songs. When she was 18, after having self-recorded three of...