This year’s big local Grammy winner was Nantucket and Cape native Meghan Trainor, who picked up the award for best new artist. After making a teary acceptance speech, the “All About That Bass’’ singer hit the afterparty at Hotel Bel Air in Los Angeles, where she made time for photo ops with some of the biggest stars of the night. They included (top, from left) One Direction’s Louis Tomlinson, Miguel, Cam, and (above, from left) L.A. Reid and Zara Larsson and Camila Cabello of Fifth Harmony.