Shoppers say it “holds everything”Credit: Jeff Spicer/GettyNEED TO KNOWA shopping writer loves the popular east-west bags celebrities like Anne Hathaway and Emily Blunt have been wearing.Quince has a lookalike style that’s $280 cheaper, and shoppers say it “holds everything.”Anne Hathaway and Emily Blunt are two of my style icons, so having them on a press tour together has given me endless outfit inspiration. As a result, my shopping list has b…