ABC Carrie Underwood is speaking out in response to rumors that she's feuding with Nikki Glaser, a recent guest judge on the American Idol panel. Nikki served as a guest judge on Idol's recent Taylor Swift-themed episode and while she doesn't necessarily have music expertise, she is one of Taylor's biggest fans and knows her music better than anyone. She was the perfect choice to judge performances of Taylor's music! While chatting with fellow country music singer Cody Alan on his SiriusXM radio show, Carrie was asked about rumors that she didn't get along with Nikki.