The Duchess of Cambridge wears £220 designer leggings, so why are they worth it?

There were some raised eyebrows this morning for the Duchess of Cambridge, who wore a pair of ‘designer leggings’ worth £220 to play tennis with children at the National Tennis Centre.

The Duchess of Cambridge wears £220 designer leggings, so why are they worth it?

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Kate Middleton Makes Royal Decree: Leggings Are Pants - PureWow

Kate Middleton Wears £220 Leggings And Nike Trainers For Tennis - Grazia

Kate Middleton's Dress Is a Flawless Success - The New York Times