Now we know what’s happening to Karl Lagerfeld. The collection, that is.

According to Unbeige, Lagerfeld is developing a mass collection for Macy’s, which will include everything from jeans to party dresses. A source confirms as much to Fashionista.

Lagerfeld will be the third designer in a series to do a diffusion line for the department store. The first was, Kinder Aggugini, the second will be Matthew Williamson. Lagerfeld’s looks are slated to arrive in stores in the fall of 2011.