The Duke and Duchess of Cambridge attended the Tusk Conservation Awards in London on Thursday night in support of the charity for which William is a patron.

For the occasion, Kate opted to wear an elegant teal Jenny Packham gown - which royal watchers might have recognised.

William and Kate at Tusk Conservation Awards 2018pinterest
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William and Kate at the Tusk Conservation Awards, 2018

As she so often does, the duchess had opted to recycle an old favourite; she first wore the bespoke dress to a reception at the Royal Albert Hall in 2012 to mark the run-up to the Olympic Games in London.

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Duke and Duchess of Cambridge - Prince William and Kate Middleton - at the Royal Albert Hallpinterest
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William and Kate at the Royal Albert Hall, 2012
Duke and Duchess of Cambridge - Prince William and Kate Middleton - at the Royal Albert Hallpinterest
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The duchess in 2012

The beautiful dress, which was custom-made for the royal by the designer, features a silky blue-green underskirt with a sheer layer over the top, and a beautiful cut-away lace back. While in 2012, Kate opted for a plaited updo for the first outing of the dress (allowing the back of the dress to really stand out), last night she paired it with her signature soft waves.

Kate recycles Jenny Packham gown from 2012pinterest
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The duchess in 2012
William and Kate at Tusk Conservation Awards 2018pinterest
William and Kate in 2018//Getty Images

It seems as though she kept her accessories the same, with a matching teal clutch and metallic silver sandals.

William and Kate at Tusk Conservation Awards 2018pinterest
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Duke and Duchess of Cambridge - Prince William and Kate Middleton - at the Royal Albert Hallpinterest
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In times where we're being encouraged to think and shop less wastefully, we could all do with taking inspiration from the royal; she's the perfect example that a beautiful dress need not be worn just once.

We've found some similar dresses to Kate's teal gown, so you can get her look for less and wear it for years to come...

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Debenhams

BUY NOW Teal Embroidered Maxi Dress, was £79.99 now £44.99

Clothing, Dress, Day dress, Turquoise, Cobalt blue, Aqua, Teal, Cocktail dress, Electric blue, Turquoise, pinterest
Debenhams

BUY NOW Teal Amberley Halter Maxi Dress, £169

Clothing, Dress, Day dress, Aqua, Turquoise, Cocktail dress, Green, Teal, Bridal party dress, Formal wear, pinterest
Marks & Spencer

BUY NOW Multiway Strap Maxi Dress, £49

Kate Middleton Duchess of Cambridge wearing recycled Jenny Packham dress