Is 'The costs associated with demand uncertainty, which were previously connected primarily with fashion products'that is, the problem of selling a highly perishable item'have grown enormously for apparel retailers.' a fitting logical lead-up to 'This is because what consumers deem to be fashionable can change very rapidly.'
The costs associated with demand uncertainty, which were previously connected primarily with fashion products'that is, the problem of selling a highly perishable item'have grown enormously for apparel retailers.###This is because what consumers deem to be fashionable can change very rapidly.