It's been a couple of years since Carrie Underwood toured extensively, but she's back in the limelight in a big way with her recently-launched tour in support of her current album, Storyteller.

The country superstar wrapped up her Blown Away Tour in 2013. She promised fans she'd return to the road after she released Storyteller in October, and her fans have stuck by her, turning all nine of Underwood's concerts so far into wall-to-wall sellouts.

Billed as the Storyteller Tour: Stories in the Round, Underwood's current road trek features a stage that is set up in the middle of the venue, so that the singer is surrounded by her audience and playing to fans on all sides, instead of just in front of her. Easton Corbin and the Swon Brothers are her support acts on the tour, which kicked off Jan. 30 in Jacksonville, Fla. and is slated to run through the end of May.

Underwood sold out five consecutive arena concerts after her standout performance with Sam Hunt on the Grammys, including shows in Pittsburgh, Philadelphia, Boston and Washington, D.C. So far she has sold out all nine arena dates she has played on the road trek, and she'll play to more sold-out crowds when she travels overseas to London’s O2 Arena and Glasgow’s Clyde Auditorium as part of the Country 2 Country Festival.

The international leg of the tour will commence in Stockholm, Sweden on March 4 and wrap in Dublin, Ireland on March 13. Hunt and Little Big Town will join Underwood for the Glasgow, London, and Dublin shows. Hunt makes a guest appearance on Underwood's current single, "Heartbeat."

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