It seems that the 84-year-old Queen has become an unlikely fashion icon in Britain — she is said to have sparked a boom in trouser suit sales. According to 'The Sun', shoppers have bought 40 per cent more after Her Majesty donned a lime green outfit on a cruise around Scotland's Western Isles in July. And celebrities like British Prime Minister, Mr David Cameron's wife Ms Samantha and England footballer David Beckham's singer wife Victoria have been seen in the two-piece outfits. The Queen usually chooses dresses or a skirt and blouse and had not been seen in the trouser suit before. Lizzie Singleton, spokeswoman for Debenhams who spotted the trend, was quoted by the British tabloid as saying, "HRH is clearly an unlikely style icon but we've had a right royal boost in sales."