Billboard magazine reports that Justin Timberlake’s William Rast Clothing has been doing well in its infancy. Solis founder Steve Haas says early sales are healthy. “People are impressed with this very credible line,” Haas remarked. “We’re already asking for more product.” Haas added that even if the *NSYNC star’s name was not attached to the line, the San Francisco boutique would still carry the brand. “Justin’s association is icing on the cake,” Haas said.