DOWN UNDER UP HERE: On Wednesday night, the hors d’oeuvres at the Crosby Street Hotel had the Melbourne-born model Shanina Shaik feeling more at home than usual. “I just had a Vegemite sandwich and it felt so good,” the recently minted Victoria’s Secret Angel said. The Australian delicacy isn’t normally on the catering menu at the SoHo spot, but it made an appearance Wednesday as a clutch of Aussies turned out for a cocktail party to kick off the Australian Five initiative, a joint project of The Woolmark Co. and the Australians in New York Fashion Foundation. The project brought five of the country’s young designers — Fernando Frisoni, Magdalena Velevska, Kym Ellery, Michael Lo Sordo and Christopher Esber — to New York to showcase their wares. A dozen or so models wore the designers creations, all constructed of Australian merino wool, for the assortment of New York editors and stylists who turned out to welcome them.