Carrie Underwood makes a surprise appearance on-stage with her baby bump for the first time

Carrie Underwood debuted her baby bump during a surprise appearance at Keith Urban’s concert held in Nashville, Tennessee.

The pair sang their 2017 collaboration, “The Fighter.” While Urban usually plays the song alone with his band, fans at the Nashville show were graced with Underwood’s special appearance.

Underwood looked glowing with her baby bump as seen on the video she posted on her Instagram page.

It was the first time the singer performed in front of a big crowd following her pregnancy announcement.

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In the video, Urban can be seen with his band playing the song, which was included in his 2016 album called “Ripcord,” when suddenly, Underwood emerges from the back of the stage.

Underwood gracefully belted out the notes to her parts, while Urban strummed his guitar and enjoyed the performance with his fellow country singer.

After the performance, Underwood posted that snippet of their collaboration on her Instagram page.

The 35-year-old wrote, "Will it ever suck getting to sing with Keith Urban??? No. The answer is no. Such an incredible and LOUD crowd at the Bridgestone Arena tonight!!! I know you guys all had a blast! Thanks for having me up there with ya’ KU!"

Apart from Underwood, Urban also had other guests come up to the stage, including Kelsea Ballerini, Ashley Ryan, Shy Carter, Larkin Poe, Kassi Ashton, and the Tennessee State University marching band

The Graffiti U tour will go on until November for the North American leg and will continue in Australia for some dates from January until February 2019.

As for Underwood, she is scheduled for a busy fall since she will have concerts and appearances throughout the whole month of September in line with promoting her upcoming album, “Cry Pretty” – set to be released on September 14.

On November 14, Underwood will be hosting the CMA Awards together with Brad Paisley.

Aside from her career, Underwood’s baby is probably the most exciting thing for her as of late. The star has remained private with the gender of her second child. She also has not disclosed when her due date will be to the press.

Previously, Underwood spoke with Red Book Magazine to discuss the plastic surgery speculations that surfaced following her accident where she fell down a flight of stairs.