Kate Middleton aka The Princess of Wales understood the assignment when she attended the Earthshot Prize last week while in Boston with Prince William.

All eyes were on the future Queen when she stepped on the green carpet wearing a green Solace London dress that she rented from the British rental store Hurr. She .accessorized with a green choker from the late Princess Diana.

Earthshot was established by Prince William and Sir David Attenborough to award five grants annually to ideas, people and projects aimed at combating global warming,

So instead of purchasing a brand-new gown, the Princess opted to promote a more sustainable – and affordable – way of dressing. She understood the assignment and looked amazing!

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