When William Rast started many people thought it would be another here-today gone-tomorrow celebrity brand. But Justin Timberlake along with childhood friend Trace Alaya and designers Johan and Marcella Lindeberg (shown above) have established WR as a credible denim brand sold in hundreds of stores worldwide. WWD reports that the expansion is set to continue – their first appearance at New York Fashion Week to be followed by a shoe collection, a new marketing campaign and eventually their own William Rast stores.