George Strait's beefing up his tour lineup. Blake Shelton is now on board for the upcoming trek, which runs 17 dates throughout May, June, and July. Shelton calls it "a huge honor" to be invited to join Strait's tour, noting he has, quote, "the utmost respect" for the Country Music Hall of Famer. He adds that he's very thankful the veteran performer is giving him, quote, "this incredible opportunity." Shelton will miss the tour launch, in Hidalgo, Texas on May 9th, but will join the tour in Charlotte, North Carolina on May 15th.

Julianne Hough is also on the bill for Strait's tour. But the country newcomer -- and "Dancing With the Stars" pro -- will also get some stage time in this winter. "USA Today" says she'll be joining Toby Keith for a couple of stops on his tour, which kicks off tonight in Albany, New York. Hough is scheduled to open for Keith in Louisville, Kentucky on February 6th and in Des Moines, Iowa on February 22nd.