When Tibi designer Amy Smilovic came up to the American Skybox to chat about spring, she said it’s not just the clothing that has trends. Models do, too. And for Spring 2012 the trend for models is healthy bodies. That means, start working the core ladies because this translates to showing off the midriff. Even Oscar de la Renta let a slip of skin peek above a ballgown on the runway!

From left: Tracy Reese, Nanette Lepore, Rebecca Minkoff, Oscar de la Renta

Photo credit: Style.com