Kelsea Ballerini celebrated her 28th birthday on Sunday evening with a very special surprise guest during her show with the Jonas Brothers.
The singer/songwriter was joined by Thomas Rhett at the Hollywood Casino Amphitheatre in Tinley Park, Illinois for her CMA nominated single, “Half Of My Hometown.”
Rhett joined the birthday girl on stage to lend his vocals to the nostalgia-filled track.
Ballerini documented the moment on Instagram with a series of photos.
“Half of my hometown, but always on the hometeam. thanks for singing with me tonight TR,” she wrote.
This isn’t the pair’s first time collaborating. Ballerini and Rhett previously co-hosted the primetime CMA Fest special and Ballerini joins Rhett on the title track of his Center Point Road album.
“We’ve toured together, written together, been insecure and celebrated together, had double dates, and have just become like brother and sister,” Ballerini once told PEOPLE of her friendship with Rhett. “It’s really a gift to have someone in the same industry as you that you can have the real conversations with and look up to. He’s a good one, and I’m super grateful for his friendship.”
The original recording of “Half Of My Hometown” appears on Ballerini’s kelsea album and features vocals from country superstar Kenny Chesney.
The collaboration was recently nominated for CMA Musical Event of the Year and Music Video of the Year.
Fans can catch Kelsea Ballerini on tour with the Jonas Brothers through late October.
