Starbucks announces major change as it revamps cafe look amid massive decline in sales

Starbucks, the world's largest coffee shop chain, is implementing a new dress code for workers across its North American stores next month, as the coffee giant aims to refresh its store image and boost business under CEO Brian Niccol. This is the latest change made under Niccol, who took over in September and subsequently launched a "Back to Starbucks" strategy.