How has Kelly Clarkson managed to stay so down-to-earth? She's a platinum-selling, globe-trotting superstar, but to watch her in this new interview with Sydney-based radio station Mix106.5, it's clear that she thinks of herself as just another girl — and an insecure girl to boot.

In the interview (below), Clarkson, who was preparing to perform at the National Rugby League Grand Final (which has about the same cultural importance to Australians as the Superbowl does to Americans), talks about her favorite feature of the sport: Hot rugby guys. "Everybody kept telling me the rules and I was like, 'Blah, blah blah, hot guys in uniforms,'" Clarkson laughs.

Just as long as they don't get too close. "I'm very outgoing until I get around boys, and then I become this girl … All of a sudden I forget how to speak," she explains. Hard to imagine Clarkson clamming up just because there's a cute guy nearby, but we'll have to take her word for it.

As for her country-chic styling, Clarkson says that if she had it her way, she would be completely dressed-down. "I would be here in jeans and a tank, and a baseball cap to hide the fact that I'm not wearing makeup and I didn't want to fix my hair. That's me!" Clarkson says. "It's hot. That's probably why I'm single. It's a hot look."

We're unconvinced: It's more likely that the gentleman callers might be steering clear to avoid being eviscerated in songs like the bitter kiss-off 'Mr. Know It All,' her current single, which has peaked at No. 18 on the Billboard Hot 100. Internationally, the track has fared better: After her Australian promotional tour, 'Mr. Know It All' reached No. 1 on the ARIA Charts. Her upcoming studio album, 'Stronger,' is due out Oct. 24.

Watch the Kelly Clarkson Interview With Sydney Radio Station Mix106.5