The Duchess of Cambridge steps out in a familiar dress for joint engagement with Prince William

It's their first appearance together since Kate's maternity leave ended last week.

The Duke  & Duchess Of Cambridge Attend The Global Ministerial Mental Health Summit
Getty ImagesMark Cuthbert

The Duchess of Cambridge just stepped out for her first joint appearance with Prince William since her maternity leave ended, wowing crowds in London in a long-sleeved lavender dress by British designer Emilia Wickstead.

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Kate and William are attending the first Global Ministerial Mental Health Summit today (9 October), an initiative that aims to improve mental health around the world.

And, if Kate's outfit looks a little familiar to you, that's because this isn't the first she's been spotted in the chic fit and flare design.

Proving once again that she's a fan of recycling fashion, Kate opted to re-wear a dress she was first spotted in back in July 2017 during the royal tour of Poland and Germany.

On this occasion, Kate teamed her lilac dress with nude heels and a .

Aspinal Mayfair Bag with Stripe Strap, £695

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Today's event marks Kate's second official appearance since she returned from maternity leave following the birth of Prince Louis in April.

Last week (2 October), Kate visited the Sayers Croft Forest School and Wildlife Garden at Paddington Recreation Ground.

And, if Kate's lilac outfit has inspired you to try the on-trend shade yourself – pastels are huge news for autumn/winter – then we may just have found the perfect high street alternative from trusty Marks & Spencer for £35!

M&S Collection Tie Front 3/4 Sleeve Shift Dress, Marks & Spencer, £35

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