Fruit of the Loom Inc is to sue rival t-shirt manufacturer Gildan Activewear over allegations of industrial espionage. Fruit of the Loom filed suit in the US court on allegations that Gildan Activewear stole the company's operating plans and lured away some of its top executives. "This case is about industrial espionage at the highest corporate level and the lengths to which predatory competitors will go to obtain commercial advantage," Fruit of the Loom said in its filing.