Jordin Sparks , 17, becomes the youngest American Idol winner.

LOS ANGELES -- Jordin Sparks, a teenager with a big voice and big dreams, was crowned last night as the newest and youngest American Idol.

Sparks, 17, of Glendale, Ariz., prevailed over beatboxer Blake Lewis, 25, of Bothell, Wash., after a triumphant performance Tuesday that wowed the show's judges and the viewers who gave her a majority of the record 74 million votes cast.

"Mom, Dad, I love you," Sparks, the daughter of retired NFL player Phillippi Sparks, said tearfully after a bear hug from Lewis.

The contest came down to either the stronger singer, Sparks, or the better entertainer, Lewis. Sparks delivered her songs simply and powerfully; Lewis' flourishes included his sound-effects beatboxing and sharp dance moves.

The finale pulled out the stops and the stars, with Gwen Stefani, Smokey Robinson, Tony Bennett, Bette Midler, Green Day and more performing.

The two-hour show opened with Lewis and Sparks dueting on the Beatles I Saw Her Standing There, followed quickly by a touring Stefani singing 4 in the Morning via satellite from Massachusetts.

Midler took the stage as the show came toward its close, singing The Wind Beneath My Wings.

Past Idol winners and this season's contestants got a hefty share of attention, starting with first-season winner Kelly Clarkson, who performed her new single Never Again.

Carrie Underwood, the fourth-season idol, sang I'll Stand by You and was honoured by legendary music mogul Clive Davis for reaching six million in sales for her debut album Some Hearts.

Taylor Hicks, last season's winner, also had his moment in the finale sun, as did Ruben Studdard, the winner from year two.

Robinson, a Motown great, performed Being with You after the top six male contestants, including fan fave Sanjaya Malakar, sang Ooh Baby Baby, a hit for Robinson and his group the Miracles.

Blake, whose beat-boxing scored with viewers, performed with veteran rapper Doug E. Fresh on his old hit, The Show. It was a signature moment for a contest that has introduced young viewers to Gershwin and other standards.

Gladys Knight took the stage with the six female finalists, belting out I Feel a Song and Midnight Train to Georgia. Bennett performed a mellow version of For Once in My Life that ended with a big finish.

"A true idol, Tony Bennett, ladies and gentlemen," Seacrest gushed.

Melinda Doolittle, arguably the best Idol contestant to miss the finale, returned to impress the crowd again as she sang Hold Up the Line with gospel stars BeBe and CeCe Winans.

"She has proven in the last few months to be spectacular," BeBe Winans said backstage of Doolittle.