Anna Wintour’s look was a collaboration between the late Karl Lagerfeld and Chanel’s currernt creative director Virginie Viard
Source: The Independent

Met Gala 2019: Anna Wintour reveals Karl Lagerfeld made her Met Gala dress before his death
Met Gala 2019: Anna Wintour reveals Karl Lagerfeld made her Met Gala dress before his death
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