After debuting her duet with boyfriend Blake Shelton, Gwen Stefani hit the stage solo at 102.7 KIIS FM’s Wango Tango on Saturday night. Before her performance, she glowed on the red carpet and even let a little country twang slip while talking to “Extra’s” Renee Bargh, reflecting how smitten she is with Shelton. Gwen called their performance of “Go Ahead and Break My Heart” “a miracle” and shared, “Just that I got to write a sing with him is crazy… New music for me is so special. To do something like that that is so different, outside of my world, I’m so so excited about that.” Gwen also chatted about her epic Carpool Karaoke with George Clooney and Julia Roberts on "The Late Late Show with James Corden."