Aside from its standout royals and long-standing traditions, the British royal family is known for its glittering sets of jewels that the women casually ... Anne wore an intricate green paisley ...

But on March 17, the Princess Royal proved she's the ultimate sustainable queen by wearing what appears to be a re-worked version of the same brocade dress she wore when she was just 21.

As if to give a nod to St. Patrick's Day, Anne wore an intricate green paisley printed dress for the event ... the frock with with an opulent pearl choker with vertical diamond encrusted bars ...