The "Mama's Broken Heart" singer shared some photos to Instagram on Monday of the show, and captioned it, "Our 1st time ever ...

George Strait fans at a California concert last night got the surprise of their lives when Miranda Lambert made an appearance ...

Miranda Lambert served as a superstar surprise guest during George Strait 's headlining set in the L.A. area on Saturday ...

Country Icon George Strait, 73, Brings Out the 'Ultimate' Surprise Special Guest originally appeared on Parade. George Strait ...