Kelly Clarkson, the first winner of American Idol, shared a funny story on her talk show about being mistaken for fellow Idol alum Carrie Underwood. Clarkson laughed as she recounted a fan approaching her and praising her song "So Small," which was actually sung by Underwood. Clarkson signed the fan's item as "Carrie Underwood" and later clarified the mistake. Clarkson was joined by Michelle Buteau and Cheryl Hines, who shared their own experiences of being mistaken for other celebrities. Clarkson recently hosted the 2020 Billboard Music Awards and stunned in seven different outfits throughout the evening.