GMS winners will be revealed in a ceremony at The Wiltern Theatre in Los Angeles on March 5.
The Country Music Hall of Fame duo will welcome Scotty McCreery on the road with them.
Swift first opened up about her struggles with food and body image in her 2020 documentary Miss Americana.
The 19-city run will also feature opening acts Japanese Breakfast, Jenny Lewis and Weyes Blood.
Actor-producer Riz Ahmed and actress Allison Williams will host the livestream.
The Power 100 event presented by UBS will take place at Goya Studios in Los Angeles on Feb. 1.
The March gig for God's Love We Deliver will also feature Mavis Staples, Rufus Wainwright and Gary Clark Jr., among others.
The 81-year-old rocker was also planning to hit the road this summer.
Bad Bunny, Camilo, Becky G and Grupo Firme follow up with nine nods each at the 35th edition of the longest-running Latin music award show.
The singer said he decided to double-down during comments at the Creative Coalition Spotlight Initiative Gala.
