VIDEO: Kelly Clarkson Covers Rihanna's 'Stay' at Sunday Concert

Kelly Clarkson continued to wow her fans with covers of hit songs. At Sunday night's concrert at Pittsburgh's First Niagara Pavilion, the AMERICAN IDOL champ took on Rihanna's "Stay" to the delight of the crowd. Watch the performance below!

In previous concerts, Clarkson has performed such hits as Nick Jonas' 'Jealous' (click here to watch) and Imagine Dragons' "Radioactive."

Clarkson rose to fame after winning the first season of American Idol, and has since been established as "The Original American Idol." Her debut single, "A Moment Like This", topped the US Billboard Hot 100 and broke the record for the biggest jump to number one in the chart's history; it became the best-selling single of the year in the country. She became THE RUNNER-UP of World Idol the following year.

Clarkson's debut studio album, Thankful (2003), has been certified 2× platinum and sold over 4.5 million copies internationally. Its lead single, "Miss Independent," became an international hit, earning Clarkson her first Grammy nomination. She developed a rock-oriented sound with the release of her second album, Breakaway (2004). It has been certified 6× platinum and sold over 15 million copies worldwide, earning Clarkson two Grammy Awards, including one for the hit single "Since U Been Gone." She later took full creative direction of her third album, My December (2007), which has been certified platinum. Its lead single, "Never Again," became a top ten hit. Clarkson's fourth album, All I Ever Wanted (2009), debuted at number one, and became a critical and commercial success. Its worldwide hit single, "My Life Would Suck Without You", surpassed "A Moment Like This" for the biggest leap to number one on a single week in the history of the Billboard Hot 100 Chart from number 97, a record it still holds today. Her fifth album, Stronger (2011), generated international chart-topping singles, "Mr. Know It All" and "Stronger (What Doesn't Kill You)." The latter is the best-selling single by an AMERICAN IDOL alumni to date; it has sold over five million copies worldwide, making it one of the best-selling singles of all time.

In 2012, Clarkson released Greatest Hits - Chapter One; its lead single, "Catch My Breath," became her twenty-fourth entry on the Hot 100 and eleventh million-selling single. Clarkson's sixth album and first Christmas-themed release, Wrapped in Red (2013), became the best-selling holiday album of the year, making her the first American female artist to achieve this goal. In 2015, Clarkson released her seventh studio album, Piece by Piece, which debuted at number one on the Billboard 200 Chart, becoming her third number one album in the United States.

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