Nicole Kidman moves fast!

In Elle magazine's January issue, the movie star admitted that she and her hubby of eight years, Keith Urban, got engaged after less than a month of dating. WHAT?! Yep -- you read that right, ONE MONTH OF DATING!

Kidman explained to the mag that while it's unusual to most people, that kind of mentality works for her. The Aussie confessed, "I'm spontaneous. I jump in. I kind of like getting married and then getting to know each other; I know that it sounds incredibly strange, but to me, it's a more natural process."

Huh? Well we guess upon learning that -- we aren't surprised that Kidman and her ex Tom Cruise's marriage crumbled!

"I think that she has been very poised throughout her public life, and sometimes people will misconstrue that; they see her as being an ice queen," the singer said.

"The kind of scrutiny she's been subjected to can't be comfortable, and she's dealt with it by being very careful—that's what gives people the wrong idea. She's not someone we're going to see out paddle-boarding in a G-string; she doesn't set up situations where she's playing to the paparazzi. She's more old-school than that. She's not that kind of movie star."

Kidman's issue of Elle hits newsstands nationwide on December 16.