Lang is known for his minimalist, deconstructivist, and often severe designs. His fashion house became famous in the late 1980s for its simple but refined designs, its slim suits in black or white, its denim collection, and the use of high-techfabrics. In 1999, Lang entered into a partnership with Prada Group which resulted in the acquisition of the Helmut Lang brand by Prada in 2004, and Mr. Lang's departurefrom the label in 2005. Prada consequently sold it to Link Theory of Japan in 2006. Link Theory re-launched the Helmut Lang label with new designers in 2007.