By Invitation Only - Forbes.com. Spring Fashion 2010 - Is Gilt Groupe Good or Bad for Fashion? The wave rolls in every day at noon Manhattan time. It gathers invisibly, out in the digital netherscape. A few minutes before the hour, the online retailer Gilt Groupe blasts out an e-mail, and a hush falls over many a workplace, as phone calls are cut short and spreadsheets minimized. Gilt Groupe is in the business of selling high fashion at deep discounts, and as you might deduce from the company’s name, with its Frenchified “e,” it presents itself as an exclusive club. How Gilt Grew Sales from $25 million to $170 million in 2 years.