Justin Timberlake and childhood pal Trace Ayala (above) showed their William Rast fashion line (named after their grandfathers) Tuesday evening at Social Hollywood on Sunset to the glamorous young celebrity set, including Nick Carter, Cameron Diaz, Wilmer Valderrama, and Patrick Dempsey (pictured). At the Boulevard 3 after-party next door, Timberlake performed. Were you there? (Source)