Minutes after revealing her wedding plans backstage with Billy Costa at the Kiss 108 Jingle Ball...Meghan Trainor And Daryl Sabara's Backyard Wedding Is Happening 'Soon'By Rami Abou-Sabe... and one quick costume change later, Meghan Trainor lit up the stage at the TD Garden.Decked out in a dazzling black santa suit and fuzzy trimmed hat, the "Let You Be Right" singer sashayed her way into our hearts.😍Keep dancing, darling! 💃1 of 112 of 113 of 114 of 115 of 116 of 117 of 118 of 119 of 1110 of 1111 of 11Photo: Getty Images