Today, this popped into my inbox: And I promptly started to drool and look at airfares to London. Impulsive? Maybe just a little. But I’ve planned vacations based on news stories about chickens. The Berkeley Hotel in London’s Knightsbridge neighborhood (near Harrods) announced its Spring/Summer 2012 Prêt-à-Portea afternoon collection. Inspired by the season’s fashions, the…