"I can't believe that my whole family kept this secret from me!" the 24-year-old country singer tearfully exclaimed as she took the mic. "I'm so honored to be at the Opry, but I'm more honored to be here with all the people that I love the most."
Jamie Lynn took to Instagram to call it the "best surprise ever at the most special place ever."
Britney posted a shot with her brother backstage, captioning it, "Before we surprised @jamielynnspears tonight!! So proud of our baby sister ❤❤❤"