Miranda Kerr made a special appearance at a David Jones department store in Melbourne earlier today. She signed autographs and greeted fans while wearing an intricate Ryan Storer earmuff and a Scanlan & Theodore black dress. Miranda is back in her native Australia to do press for the Aussie store. Miranda returned to the runway as well for the store's Fall preview fashion show earlier this week. Of course, Miranda's return Down Under wasn't just about PR — she also found some time to hang out with her mom and work on her new skin care line, Kora Organics. Earlier today, Miranda tweeted a photo of herself in a lab coat and hairnet at the Kora labs, testing out new products. She wrote, "Spent the afternoon at the KORA lab where the magic is made."