Adding to our list of Best Ever Collabs, Zac Posen announced that he will be teaming up with M.A.C. Cosmetics to create his own makeup line for the brand. “Over the past 15 years, I have learned a great deal from M.A.C. about beauty," he said. "Fashion and beauty go hand-in-hand, and I have always wanted to create a makeup collection to complement my designs and brand.” He also added that his first-ever makeup collaboration will be compeltely natural.