Favourite song to sing is "Chain Of Fools" by Aretha Franklin
Debut album, "Blue Skies" was released on December 7, 2004
Has two dogs, Rosie and Dixie
Her favorite artists include'Céline Dion', Dolly Parton and Patsy Cline.
Her mother is Brenda DeGarmo; one older brother, David
As a child, participated in everything from beauty pageants, musical productions and commercials, to even being featured on The Cartoon Network.
Was crowned Miss Teen Georgia 2002.
Before being a contestant on American Idol, she sang the national anthem for her high school and for just about every major league sports team in town. She earned the local nickname "the national anthem girl".
Shares the same birth date as Tupac Shakur.
She performed at The Grand Ole Opry in Nashville, Tennessee when she was younger.
Born in Birmingham, Alabama but spent most of her life in Snellville, Georgia
She is of Italian/French/Native American descent.
On American Idol, she sang "This is It" by Melba Moore on disco night. Two years later she starred alongside Melba Moore in the cast of the national tour of Brooklyn: The Musical.
The song "She Bangs" by Ricky Martin, written by Desmond Child, contains the lyric "she switches signs like a Gemini". This line was inspired by Diana (a Gemini), who knew Child and had discussed zodiac signs with around the time he wrote the song.
First contestant from American Idol to go on a USO tour to the Persian Gulf in 2005, at age 18. She's also the youngest performer to go overseas.
Engaged to Ace Young. 
Performs as a country singer/songwriter in Nashville and released an acoustic EP of original tracks entitled "Unplugged in Nashville" digitally. [February 2009]
Traveling across the U.S. and to other countries promoting her album, "Blue Skies" [February 2005]
Plying the role of Angelina on the popular CBS soap opera "The Young and the Restless". [December 2011]
Currently starring as Penny Pingleton in the hit Broadway show "Hairspray" 
Continues to perform in musical theatre, recently played Sarah, a sexy, blind librarian in "The Toxic Avenger Musical" Off-Broadway. [January 2010]
Recently split with record label, RCA, with their approval and at her request. [June 2005]
Just ended a stint in Off-Broadway's "The Toxic Avenger". Continues to do musical theatre productions and sings and writes country music in Nashville. [January 2010]
Returned to the role of Penny Lou Pingleton in the Broadway production of Hairspray after shortly touring as the title character in the musical Brooklyn. [December 2006]