Has there been another secret wedding? That’s what people thought when Matthew Kona called Hilary Duff, “Wife,” on The ‘Gram. The musician and his bride-to-be were dressed up for the Adopt Together Baby Ball Gala on Saturday in Los Angeles. After the post went up, several fans offered their congratulations. But their rep said that Matt was just practicing for the when he and Hilary actually tie the knot.