Kate Middletonis heading back into her royal closet — again!

The royal mom of three, 36, stepped out withPrince William, 36, for theinaugural Global Ministerial Mental Health Summitlooking lovely in lilac. But fans were experiencing some style déjà vu — and for good reason!

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BRITAIN-ROYALS-MENTAL HEALTH

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Global Ministerial Mental Health Summit, County Hall, London, UK - 09 Oct 2018

HAMBURG, GERMANY - JULY 21: Prince William, Duke of Cambridge, Prince George, Princess Charlotte of Cambridge and Catherine, Duchess of Cambridge view helicopter models H145 and H135 before departing from Hamburg airport on the last day of their official visit to Poland and Germany on July 21, 2017 in Hamburg, Germany. (Photo by Samir Hussein/WireImage)

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The Duke And Duchess Of Cambridge Visit Germany - Day 3

RELATED VIDEO:Kate MiddletonIs Back from Maternity Leave — with a New Haircut and Old Boots!

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The Duchess Of Cambridge Visits Sayers Croft Forest School

Katemarked the end of her maternity leavelast week when she visited a school in London that exposes children in the city to the great outdoors with anepic royal rewear. She dressed down for the engagement, but remained stylish in an olive green sweater and matching jacket paired with light brown skinny jeans.

Kate finished off her look with hertrusty Penelope Chilvers long tassel boots, which she has had in her closet for well over a decade.

“It’s great to see the Duchess wearing the first boots we made for her in 2004 – 10 years on,” Chilverspreviously told PEOPLE. “The boots only get better with age. She looks fabulous in them.”

source: people.com