Fashion insiders have made it clear in recent years: comfort is no longer a casualty in the pursuit of style. From the dominance of dad trainers to the Copenhagen Fashion Week set pairing flip-flops with everything from tailoring to slip dresses this season, the cool girls are determined not to squish a spare pair of flats in their beloved handbags.

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This season, Sienna Miller is taking the trend into her own hands. Embracing the rise of the flat shoe while staying true to her signature aesthetic, she delivered a masterclass in laid-back, city-ready chic.

© Getty Images for Gucci Sienna Miller was spotted on the streets of London weaing fl

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