Justin Timberlake does more than simply wear designer jeans, he has his own label. Together with his friend Trace Ayala they run William Rast. He has a bit of a different approach than the other celebrity and fashion labels. As the New York Times states:
Mr. Timberlake’s name was kept off the label to avoid the overt appearance of cashing in on his celebrity, but he approves all of the designs and comes up with some of them. William Rast, named after two of Mr. Timberlake’s and Mr. Ayala’s grandfathers, began selling $180 boot-cut jeans at Bloomingdale’s and a handful of other stores. The idea was that the partners would perfect their basic designs before making a more ambitious fashion statement.
Justin Timberlake with longtime friend and business partner Trace Ayala
with Jessica Biel, both wearing William Rast