Balenciaga's spring 2012 ad campaign will star 17-year-old Dutch model Laura Kampman, the label just announced in a press release. Kampman joins one of the label's current faces, 15-year-old Juliane Gruner, who renews her contract from the fall 2011 season. Kampman walked for Balenciaga's spring 2012 show in Paris as an European exclusive. The ads, shot by Steven Meisel, come out in January.