Nicole Richie goes wild with their Kids The Maddens hit the zoo in Sydney. Nicole Richie and her daughter Nicole Richie and her son Wearin...

Nicole Richie goes wild with their Kids

The Maddens hit the zoo in Sydney.

Nicole Richie and her daughter

Nicole Richie and her son

Wearing a hat perhaps inspired by the movie "Crocodile Dundee," Nicole Richie brought her family on a wildlife adventure in Australia on Tuesday. And, no, they weren't in the Outback. The "Fashion Star" mentor, her rocker-husband, Joel Madden, and their kiddos visited the Toronga Zoo in Sydney, where they got up close and personal with some of the furry residents.

The family was accompanied by a handful of friends for their guided tour. They checked out giraffes, feeding one a carrot, and Richie, 30, played shutterbug, snapping photos throughout the excursion. For the special event, Harlow, 4, fittingly wore an owl T-shirt, while Sparrow, 2, had on a Baltimore Orioles cap — a nod to his father's favorite team.

"Thanks Toronga Zoo for having us today with the kids," Madden, 33, later tweeted. "They are still buzzing from it. Can't get enough. We'll be back fo sho." Earlier in the day he wrote, "Australia is the best place for kids bar none. Pretty amazing to see my kids loving it as much as I do. So happy they feel at home."

The quartet has set up shop Down Under while Joel appears on the Australian version of the TV series "The Voice." He's a voice coach along with Keith Urban, Seal, and Delta Goodrem. The show has been a big ratings draw in Australia and the Maddens stepped out together last week to attend a cocktail party celebrating the success of the show.

Meanwhile, Richie's NBC series "Fashion Star" wrapped up last night. She tweeted during the show — apparently from Australia — and when the ultimate decision was made to crown former teacher Kara Laricks the winner, she wrote: "Deciding on a winner was an emotional process for all. #exciting #heartbreaking #FashionStar." Although the show didn't generate big buzz in comparison to other reality competitions on the air recently, NBC announced that it will return for a second season next year.

Richie also has another project on the horizon. It's been announced that she will design a limited edition collection for Macy's that will be part of their in-house Impulse brand, which will debut in stores and online in September. Of course, she also still has her jewelry line, House of Harlow 1960, and women's collection Winter Kate. She also recently launched an eponymous line for QVC.

With a schedule like that, it's no wonder she clearly enjoys a relaxing day with her family at the zoo.