Las Vegas ? Lauren Nelson, an aspiring Broadway star, was crowned Miss America on Monday night, the second year in a row that a Miss Oklahoma has won the crown.

Nelson, 20, of Lawton, Okla., is a student at the University of Central Oklahoma and wants to get her master’s degree in musical theater.

“I wanted to be Miss America since I was 2 years old, and never in my wildest dreams did I think I would be one of those girls onstage and never did I dream I would be Miss America,” she said afterward.

Shilah Phillips, the first black Miss Texas, was first runner-up, and Miss Georgia, Amanda Kozak, was second runner-up. Miss Mississippi, Taryn Foshee, and Miss Alabama, Melinda Toole, rounded out the top five. Viewers named Toole as Miss Congeniality.

Nelson was crowned by last year’s winner, Jennifer Berry. Nelson, a blonde who told judges she wishes she was taller, sang “You’ll Be In My Heart” in the talent competition and plans to promote protecting children online during her yearlong reign as Miss America.

She gets a $50,000 scholarship with the crown and stands to make thousands more in appearance fees.

The last state to win back-to-back titles was Mississippi, when Mary Ann Mobley crowned Lynda Mead as Miss America in 1960.

The pageant tossed in a few reality-TV twists on the way toward selecting its ideal woman in a new time slot on the Las Vegas Strip.

Mario Lopez, of “Dancing with the Stars” and “Saved by the Bell,” hosted the show, its second year at the Aladdin Resort & Casino on the Las Vegas Strip. The pageant moved from Atlantic City, N.J., last year in an attempt to breathe new life into an institution that had fallen far from the forefront of American pop culture.

Although previous experiments with reality gimmicks fell flat, this year’s show included viewer voting and increased participation from the panel of celebrity judges, which included MSNBC talk show host Chris Matthews.

Miss Oklahoma Lauren Nelson, center, is congratulated by her competitors after being crowned Miss America 2007 at the Aladdin Resort & Casino in Las Vegas. Nelson was the second Miss Oklahoma in a row to win the pageant. Host Mario Lopez is at right.

In one of the new features, viewers were shown a glimpse of interviews between contestants and judges, something that previously was closed. In her clip, Nelson spoke about how her faith helped her make it through the stress of pageantry.

But Nelson wasn’t the viewers’ favorite, according to a text message voting system instituted this year.

Phillips, a singer and choir director’s daughter, was the fan favorite in the talent competition. Miss California, Jacquelynne Fontaine, was the viewers’ pick for her turn in a blue bikini, and Mississippi’s Foshee was voted the favorite in the evening gown contest. The viewer vote did not count toward the winners.

The changes to the show are part of a larger marketing blitz aimed at reintroducing a new generation to Miss America, a feminine idol born of a publicity stunt on the New Jersey seaside in 1921.

After a long reign as a cultural icon, Miss America’s ratings have plummeted, and sexier reality shows have eclipsed her girl-next-door appeal. The addition of pop quizzes and casual-wear contests couldn’t save the pageant from losing its network TV contract in 2004.

MTV-Networks’ CMT picked it up in 2005 and has been attempting to restore the old girl to her former glory. It stripped the pageant of the failed gimmicks, and for the first time in decades brought back Miss Congeniality.

Last year’s crowning of Berry attracted less than a third of the viewers it had the year before, but was replayed 20 times on CMT and its sister-network VH1 for a total of 36 million viewers.

With a year to market its new product, CMT came back with its own set of gimmicks – a Bert Parks ringtone, a $1 million giveaway for picking the winner and a reality-TV special intended to help viewers connect with the contestants in the days before the crowning.