Trace Adkins, 57, and actress Victoria Pratt, 48, got married in New Orleans on Oct. 12  . . . with a very special wedding officiant conducting the service: Blake Shelton.

Trace’s official Instagram account shared a photo of the trio during the ceremony, saying: “Join us in congratulating Trace & Victoria! They tied the knot yesterday in New Orleans.”

Trace and Victoria met on the set of 2014’s The Virginian, which they both starred in.