Clarkson, of course, rolled with it.
“This girl came up to me and was like, ‘Oh my god, your song ‘So Small’ is one of my favorites.’ And I kept thinking, ‘I don’t have a song ‘So Small.’ And then she said another song and I was like, ‘Oh, you think I’m Carrie Underwood,'” Clarkson said, adding that she and the country star look nothing alike.
“I was so embarrassed for her. She was like, ‘Can you sign this?’ And I totally signed ‘Carrie Underwood.’ I think that might be illegal!”
Clarkson and Underwood have remained close over the years due to their connection with American Idol. Clarkson became the season one champ in 2002, and Underwood won the competition three years later.
Watch Clarkson recall the comical story below.