Carrie Underwood is reportedly feuding with famous singer after being compared to each other

The 'American Idol' winners are friends and were not happy about being compare to each other.

As undeniably the two most successful 'American Idol' contestants thus far, the two female singers are often compared to each other. However, Kelly was just not having any of it after she spotted a poll that asked fans to vote who their favorite winner was to crown "Most Iconic American Idol Winner".

According to reports, Clarkson was the first one who called it out on Twitter, slamming the side that was encouraging fans to decide between her and Underwood.

"I think we're both winning in life and pretty blessed! Singers, mamas, CEO's.."

Carrie then quote tweeted Kelly's own and said her own piece for her fellow 'American Idol' winner, slamming the site for pitting two very strong females against each other.

"Whatever girl, I voted for you! But seriously, I do wish more publications would just celebrate women's success without pitting them against each other... Just my thoughts... anyway... Love ya'! Hope you're well!"

Kelly and Carrie go way back, and have had mutual love and respect for each other, with fans sometimes even mistaking one for the other.