"I'm a girl that likes to be the center of attention, and right now I am, so I feel like maybe I should let the mystery live on," said Pickler in the May 28 issue of OK!.
"If I say yes or no, nobody's going to care anymore. I'm going to keep playing this game with everybody."
During a live Idol sixth season results show, Pickler performed "I Wonder," a single from her debut album "Small Town Girl."
However before she even opened her mouth to sing, Idol host Ryan Seacrest seemed aghast at the size of Pickler's chest, which seemed significantly larger than when she had participated in Idol's fifth season.
"Have you spent your money on anything since you left us?" asked Seacrest. "Shoes... imagine that," Pickler -- seemingly oblivious to what Seacrest was asking -- answered.
But Seacrest was persistent, taking a quick glimpse at Pickler's bosom. "Just shoes?" he inquired once again.
"I didn't have a clue what he was talking about. It was no biggie, it's Ryan and he's going to do his job. I don't take anything personally," Pickler told OK!.
"I thought he was implying have I bought a house, a car. He kept saying, 'What have you bought?' And I was like, 'shoes,' which wasn't a lie. I've stacked up some shoes! I thought he wanted me to keep listing things."
The 20-year-old North Carolina has previously stated she doesn't care what people say about her, but still wouldn't confirm to deny she had cosmetic surgery to enlarge her breasts.
However she added going under the knife for the sake of beauty isn't totally out of the question.
"I'm all for it. When I'm older I'm getting everything sucked, tucked and cut off," Pickler jokingly told OK!.
In addition to the size of her bust, Pickler has been in the news recently for other reasons as well.
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Her 42-year-old father Clyde Raymond Pickler Jr. was arrested last Friday and charged with three felony counts of larceny of a motor vehicle and one felony count of obtaining property under false pretense.
It's nothing new for Kellie, who competed on Idol's fifth season while her father was behind bars. Even once he was released last May, she said it's been difficult to reunite with her dad.
"It was hard to pick up where we left off after the show because our lives had changed," she told OK!.
"When he was incarcerated, I was 16. It had been four years since I'd seen him. When he came home I was a grown woman. We're not close."
Pickler has also been dating 24-year-old Nashville Predators forward Jordin Tootoo since January, but only recently made her romance with the young NHL athlete public.
But she said the fling isn't that serious yet.
"I'm not looking to settle down. I'm only 20," she told OK!, adding she'd like the relationship to develop naturally.
"The most important thing to me right now is enjoying my youthful years and continuing to sing country music and focus on my career."
Pickler finished fifth on Idol's fifth season, and described her life since appearing on the competition as "faster."
"Now that I have the career that I want -- and a job I love -- it make life better," she told OK!.
"I feel blessed. I want to continue putting out great country music and living my dream."