Miranda Lambert and Maren Morris performed their duet "Way Too Pretty for Prison" live for the very first time on Thursday night (Oct. 3). Fans were into it, to say the least.

The Roadside Bars and Pink Guitars tour stormed into the Cajundome in Lafayette, La., and after opening for Lambert, Morris joined her onstage to harmonize and sing alone during a song found on Lambert's Wildcard album.

A YouTube video shows Lambert remarking on how it was the first time they'd done it live on stage. The two women kept it simple, staying mostly stationary during the new song.

The Roadside Bars and Pink Guitars Tour runs through Nov. 23 in Greensboro, N.C. Morris, Pistol Annies, Elle King, Ashley McBryde, Tenille Townes and Caylee Hammack are among the supporting acts across various nights of the tour. In 2020 Lambert will begin the Wildcard Tour with Cody Johnson and Lanco.

Wildcard is Lambert's seventh studio album, and recently she played nearly the whole thing for Nashville media. It's more similar to her Platinum album from 2014 than The Weight of These Wings in 2016 or Four the Record. Rock, gypsy soul, traditional country and folk music all influenced her in the making of this record — a much more buoyant set of songs that she's ever grouped together.

Of "Way Too Pretty for Prison," Lambert admits she was inspired by something she told Little Big Town's Karen Fairchild after a late-night songwriting session. The singer was headed home after some wine, but Lambert insisted on calling her an Uber, remarking that she's "way too pretty for prison."

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