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Video: Kelly Clarkson Performing on 'Saturday Night Live'

January 9, 2012 (4:34 am) GMT
During the Charles Barkley-hosted episode, the champion of 'American Idol' first season sings 'Mr. Know It All' and 'What Doesn't Kill You (Stronger)'.

was one of the stars who appeared on "" over the weekend and helped the show gain its highest ratings in one year. She delivered flawless performances on the episode which was hosted by .

The winner of "" season 1 sang two singles, "Mr. Know It All" and "What Doesn't Kill You (Stronger)", both of which come from her latest studio album "Stronger". She donned a maroon mini dress when performing the former, and rocked a black ensemble when playing the latter.

"SNL was so much fun last night! Thank you everybody for all the sweet comments :) back in rehearsals today for tour. It's gonna be a killer show! I can't wait for y'all to see it!" Kelly tweeted.

Before the airing of the show, the Texan-born singer expressed her interest to do a sketch. "My skit I wanted to do was ''. I wanted Charles Barkley to be on his knees and play [Green] and I wanted to be Christina," she said. "I just love that show, so I wanted to totally make fun of it. I make fun of things I like!"

She herself has been tapped as one of the guest mentors in the upcoming season of the talent show. She's set to team up with to help coach his team. The other guest mentors are , , , , and .

"Mr. Know It All":



"What Doesn't Kill You (Stronger)":



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