 Plunged 10% after the company cut its sales outlook, becoming the latest high-end fashion line to warn of persistent woes in the luxury sector. The German fashion house said it expects full-year sales of up to $4.73 billion, which is down slightly from the previous forecast of $4.85 billion. The company attributed the revised outlook to persistent macroeconomic and geopolitical challenges and cited China and the U.K. as particularly challenging markets.