Jewett was the fourth runner-up at last year's pageant. She won two of this year's preliminary awards and said she prayed that this would be her year to win the coveted title.
"This is my fourth year competing for Miss Cobb County and it definitely shows that persistence definitely pays off," Jewett said. "It's been a dream of mine and hopefully that's only one step closer to Miss Georgia and ultimately Miss America."
Miss Cobb 2011 wins an $8,000 cash scholarship and the opportunity to compete for the Miss Georgia crown next June in Columbus.
Jewett is the only child of Frank Jewett and Stephanie Glassing.
She is a senior at the University of Georgia, where she is majoring in public relations and minoring in speech communications. Her platform issue was PEACE OUTside Campus, which is dedicated to promoting peaceful and safe living environments in off-campus college communities across the country. A friend of hers had a relative who was murdered in 2005.
"I was actually able to start a chapter back in 2007 at the University of Georgia," Jewett said.
Jewett performed a contemporary dance during the talent portion of the pageant to the song "Fuego," by the female quartet Bond. She modeled a navy blue bikini in the swimsuit competition. As she was crowned, she wore a turquoise, gold and purple strapless evening gown with a slit up her left leg.
Before becoming Miss Cobb, Jewett was crowned Miss Rome in 2009, Miss University of Georgia in 2008 and Miss Cherokee County in 2007.
Miss Cobb spokesman Chuck Fallis said he believes the judges chose Jewett because she embodies what the Miss America program is all about.
"She excels at academics, in dance and just overall, is a great choice for Miss Cobb County and I think she'll have a great chance to be the next Miss Georgia," he said.
Last year's winner Casy Walker of Powder Springs said her advise to the new Miss Cobb is to be prepared to work hard over the next year.
"This has been a phenomenal year," Walker said. "These (pageant board) people are truly a gift and there's no other way to say it and I know that she is going to have a phenomenal year."
Other past Miss Cobb winners were in attendance at the event, including 1993 Miss Cobb Joanne Grogan Feldman, a Fox 5 Atlanta meteorologist, who emceed the pageant in the Jennie T. Anderson Theatre at the Cobb Civic Center in Marietta.
The current Miss Georgia Christina McCauley of Marietta attended the pageant as a special guest and song. She won the Miss Cobb pageant in 2007. McCauley became Cobb's second consecutive Miss Georgia, after 2009 winner Emily Cook, when she was crowned in June. She will compete in the 90th annual Miss America Pageant on Jan. 15 in Las Vegas.
This year's Miss Cobb Pageant awarded more than $11,000 in scholarships to its 13 contestants. It consistently ranks in the top 10 in the country among local pageants in amount of scholarships awarded, pageant officials say.
Michaela Lackey, 20, of Marietta, won first runner-up in the pageant. She is a junior at the University of North Carolina School of the Arts and wins a $1,000 scholarship.
Jamie Kelton, 23, of Marietta, was named second runner-up. She is a graduate of the University of Alabama and wins a $750 scholarship.
Stephanie Burkholder, 19, of Marietta, was awarded third runner-up. She is a sophomore at the University of Mississippi and wins a $500 scholarship.
Whitley Cooper, 22, of Kennesaw, was fourth runner-up. She is a Kennesaw State University senior and wins a $250 scholarship.