Kate Middleton has been wearing the same boots for more than a decade

Elizabeth Di Filippo

The Duchess of Cambridge’s maternity leave is officially over – and this royal mama is ready to get back to work.

Just five and a half months after the birth of her third child, Prince Louis, the Duchess of Cambridge eased into her official duties by visiting the Sayers Croft Forest School and Wildlife Garden in London.

The 36-year-old relied on her trusty $790 (£475) Penelope Chilvers Long Tassel boots for the occasion — a staple in her wardrobe for more than 14 years.

Known for her laid back, athletic style Middleton was first spotted in them in August 2004 at the Game Fair at Blenheim Palace (when her and Prince William claimed they were “just friends.”) The designer even renamed the style of shoe after the Duchess, calling them the “Kate Middleton Long Tassel Boots.”

Click through the gallery for a closer look at Kate’s long-standing style choice.

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