New York ? Kelly Clarkson, a cocktail waitress from Texas whose signature song was Aretha Franklin’s “Respect,” was judged America’s next pop star Wednesday by the viewers of “American Idol.”

After more than 15 million telephone votes were cast by viewers, the 20-year-old Clarkson beat Justin Guarini, the big-haired crooner from outside Philadelphia.

Kelly Clarkson, 20, of Burleson, Tex., center, is surrounded by other finalists after winning Fox' s television competition American

Clarkson was the survivor among 10,000 entrants who thought they had what it takes to be pop stars. Along the way, the Fox series became the television hit of the summer, particularly among young viewers.

Even Simon Cowell, the British judge with a penchant for the withering insult, was seen to wipe away a tear at the result.

Clarkson earns a recording contract, and will release a CD single later this month and a full album in November.

“How am I going to sing this next song while I’m crying?” Clarkson said before launching into her upcoming single, “A Moment Like This.” She sang “Respect” for her initial audition and again Tuesday, before the final voting opened.

More than 18.2 million people watched “American Idol” Tuesday night as Clarkson and Guarini, 23, sang three songs each. More were expected for Wednesday’s two-hour finale, as it has been the most popular show for weeks among teenagers and young adults.

Fox stretched out the suspense in a two-hour show, announcing the winner seven minutes before it ended.

Celebrities sprinkled the crowd at Hollywood’s Kodak Theatre, including sitcom stars Ray Romano and Jane Kaczmarek, of “Malcolm in the Middle.”

Clarkson reacts to the announcement that she won, along with her final competitor, Justin Guarini.

More than 100 million votes were cast over the course of the show this summer.

One viewer, singer Natalie Maines of the Dixie Chicks, said she voted five times for Clarkson, her fellow Texan. “I knew from the first episode that Kelly was the best one on there,” Maines said.

All three of the show’s judges Cowell, Randy Jackson and Paula Abdul thought Clarkson was the most deserving of the two. The British Cowell said he had to “begrudgingly admit the talent is better here.”

Will Young, who won the British version of “American Idol,” sold more than 1 million copies of his first single.

Trying to discover stars among amateurs has a long history in American entertainment; Frank Sinatra won a radio amateur hour in 1937. More recently, the band O-Town’s career was launched through ABC’s “Making the Band” and Eden’s Crush on the WB’s “Popstars.”

Fox will feature the show’s top performers on a special Sept. 23, and they’ll head out on tour soon after. The “American Idol” winner has also been tapped to sing the national anthem at the Lincoln Memorial on Sept. 11, the Washington Post reported.

A sequel to the show is expected on Fox this winter.