After months of playing coy, Aussie superstunner Miranda Kerr and her Hollywood beau, Orlando Bloom, are altar-bound. A rep for the “Pirates of the Caribbean” actor confirmed yesterday that the lovebirds, who met backstage at a 2006 fashion show and started dating in 2007, are engaged. Bloom, 33, and Kerr, 27, didn’t release details on the proposal — or hint at a possible wedding date. The duo, who rarely talk publicly about their romance, have been denying reports of impending nuptials for more than a year. In May 2009, Kerr helped fuel the fire when she declined to comment after being photographed with a sparkling ring on her finger. Kerr, who calls Bloom “a sweetheart,” has said she wants to settle down and have a brood of kids. “My ideal situation would be to live on a farm in a solar-powered house with a hammock and a vegetable patch,” she told Page Six Magazine in 2008.