Kelly Clarkson Once Signed An Autograph As Carrie Underwood: ‘That Might Be Illegal’

Kelly Clarkson was once mistaken for fellow American Idol alum Carrie Underwood and instead of correcting the adoring fan, she just rolled with it.

The superstar opened up about the awkward situation on a recent episode of The Kelly Clarkson Show and recalled the moment a fan thought she was Carrie Underwood despite the fact that they  “look nothing” alike.

“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 explained.

“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 may not look anything alike, but they are both powerhouse vocalists and are two of the biggest stars American Idol has ever produced.