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Leaving her house, May 2017

A week before her wedding, Pippa was spotted on the streets of London in skintight leather trousers and a tan leather jacket. [Photo: FameFlynet]

Pippa Middleton’s style file: What a royal-in-law wears

Since bursting onto the ‘celebrity’ scene at her big sister’s wedding, Pippa Middleton has become something of a national treasure. Her easy going manner, winning smile, on point ladylike style and *that* behind have helped the 32-year-old soar in the past five years. 

As her high-profile wedding looms, we look back over Pippa’s most memorable looks - and attempt to guess what she may wear on her big day.

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Read more from Yahoo Style UK:

When is Pippa Middleton’s wedding, where is it and who’s attending?

6 designers Pippa Middleton might wear on her wedding day

Wedding wars: Pippa Middleton versus the Duchess of Cambridge