By Katie Couric, Instagram
By Ann Oldenburg, USA TODAY
"Who's the blonde stranger?" Jimmy Buffett asks in one of his classic songs.
But he and Katie Couric are more like blonde BFFs.
Katie spent time backstage with Jimmy earlier in the summer concert season when he appeared at the Mohegan Sun in Connecticut.
And now, on Tuesday, she was backstage again - (sharing this Instagram shot of herself) - and onstage with Jimmy, singing as a backup singer at his show in Indiana.
It seems to have had something to do with a new "Yolo" - you only live once - segment Katie's cooking up for her fall talk show.
Katie joined the Reeferettes on stage for three songs Tuesday during a Lounging at the Lagoon tour stop in Noblesville, Ind., about 20 miles northeast of Indianapolis.
Couric told local WRTV that she thought it would be a fun, visual "little fling."
Buffett told WRTV, "She can sing. So, it could be a career-starting move for her."
We're guessing she won't be quitting her day job - especially since it hasn't even started. Her new talk show arrives on Sept. 10.