A woman uses her mobile phone in front of a Zara store, operated by Inditex SA, in Kobe, Hyogo Prefecture, Japan. (Photographer: Buddhika Weerasinghe/Bloomberg)

Zara's Hot Polka Dot Dress Beats Big Data

(Bloomberg Opinion) -- A $69.90 polka dot dress from Zara has become the fashion hit of the summer. Despite little email or social media promotion from the chain, the flowy, universally flattering ...

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