(Reuters) - Tapestry Inc forecast a surprise fall in first-quarter revenue and profit on Thursday, as the high-end fashion house struggles to turn around its Kate Spade business, sending its shares down 10% to their lowest in a decade.The company, better known for its Coach handbags, also cut its full-year profit growth expectations. Tapestry bought the Kate Spade brand in 2017 to attract millennials who shunned its Coach handbags as expensive and more in tune with older customers, but has..