It’s hard to believe that it’s been 14 years since Kelly Clarkson was crowned the first ever winner of ‘American Idol’. Now a global superstar, Clarkson marked her career anniversary on Twitter, Sunday, saying she was "forever grateful" to the talent show.

Kelly ClarksonKelly Clarkson is celebrating 14 years of being an 'American Idol'

"14 yrs ago 2day @AmericanIdol opened a door w/such amazing opportunities & experiences 4 me!" the 34-year-old tweeted on September 4. "I am 4ever grateful & blessed! #heresto14more.”

Back in 2002 Clarkson beat Justin Guarini to become the show’s first ever winner after her emotional rendition of ‘A Moment Like This’. Since then she’s gone on to release seven studio albums, win three Grammy awards, accumulate 100 Billboard number-one hits and sell over 25 million albums worldwide.

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In February Clarkson returned home to ‘American Idol’ to perform her single ‘Piece by Piece’ on the show’s last ever series. The emotional song left Clarkson in tears and afterwards she told host Ryan Seacrest: “I’m pregnant and it's nostalgic and I can't believe it's the last season.

“Yeah, really sorry I just bawled. I’m actually quite proud that I made it that far!” Two months later Kelly and husband talent manager Brandon Blackstock welcomed their second child, son Remington.

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In June Kelly announced that she’d signed a new a long-term record deal with Atlantic Records after 15 years with label RCA. "We have already started creating a record that I have been wanting to make since I was a little girl,” she said in a statement.

“A record that fans have been asking me to make for years. Here's to the future!” Clarkson also referred to her RCA deal as an "arranged marriage,” adding: "After winning American Idol there was an arranged marriage that occurred that sometimes worked out and sometimes resulted in the hardest experiences of my life."