Carrie Underwood on Kids and Life: I'm 'Selfish, Independent and Closed'

Despite being the winner of "American Idol" and a multi-platinum recording artist, Carrie Underwood has admitted that she is not really a people person and although mature, not ready for kids.

Underwood first rose to fame in 2005 after winning the fourth season of "American Idol." Since, she has produced multiple platinum records and won six Grammy awards. But despite all of her success, her friends say that fame hasn't changed her.

"Carrie didn't let fame change her," her best friend, Ivey Childers, told Marie Claire magazine during a recent interview. And for Underwood, staying true means not always being the most sociable person.

"She was never super-outgoing. And she doesn't feel the need to overcompensate now," Childers said.

"She was never really a people person," said Carole, the star's mother.

Underwood agrees with those close to her. She says she wishes she was "softer" but blames her poor social skills on being the much younger sibling.

"Technically I have siblings, but they are quite a bit older than me -- I was the accident -- so I have the only-child syndrome going on. I'm a little more selfish, a little more independent, a little closed," Underwood told the magazine. "I do wish I were softer. I wish I were able to form relationships better. But hey, I mean ... I'm not a sociopath."

In 2010 Underwood married pro hockey player Mike Fisher, after dating for over a year. But despite their ongoing romance, she says they are very different people.

"He is Mr. Nicest Guy on the Planet. I skew the other way," Underwood explained.

Fisher elaborated by stating that his wife had a knack for honesty.

"My wife is brutally honest sometimes. She doesn't know how to hide her feelings," he told the magazine.

Still in the process of thinking and figuring things out, Underwood has no interest in having kids for now.

"I don't feel old enough to have kids," she said. "I know I am mature. But being responsible for another human?"