JUSTIN CAMPBELL / StarTraks 1 / 16
JUSTIN CAMPBELL / StarTraks 1 / 16

Kim's not smiling Down Under.

In Australia to promote a handbag line with sister Khloe (whose husband, Lamar Odom, is also on hand as their "bodyguard"), Kim Kardashian put on a brave but sad face as she granted her first interview since she filed for divorce from Kris Humphries on Monday.

PHOTOS: Kim and Kris' wedding

"I mean, you know, in a tough situation. I think I'm trying to do the best I can, and it's actually a bit of an escape to come here," Kim, 31, said during a videotaped radio interview on the "Kyle and Jackie O Show."

PHOTOS: Hollywood's shortest marriages

As she did in her Tuesday night blog post, the reality star defended accusations that her wedding and marriage to Humphries, 26, was a sham and a money-making scheme. "I don't think I'm ready to go into, you know, the details of what went on in my marriage," she said. "But I do want to make clear that I would never marry for a TV show, for money, for anything like that. I think that's really ridiculous that I have to even defend that."

She added philosophically: "I guess, you know, that comes along with when you film your wedding for a reality show."

PHOTOS: Their too-much, too-soon romance

At her side, sister Khloe, 27, offered her moral support. "The thing I've always admired about Kim, and I know right now it's of course too soon, but I've always admired her view on life and love," said Khloe. "I don't have that, I never had that view. So I've always loved that about Kim. It makes her such a real person and I never want that to go away."

Watch the video now.