February 22, 2016 04:30 PM

Since she married Prince William in 2011, Princess Kate has reigned as Queen of the Rewear.

But her go-to bag may be her favorite fashion essential of all – and it’s been on her arm even longer than her children, Prince George and Princess Charlotte. She was even carrying it before her marriage to William.

It’s her gray Tod’s D-Bag, which Kate has been rocking as early as 2009. The favorite piece made a reappearance last week when popped over to a Lululemon on King’s Road in London’s Chelsea neighborhood (where she lived pre-royal wedding!).

Princess Kate

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The bag, which can retail for up to $1,665, is a reincarnation of a style favorited by another famous royal. Back in the ’90s, her late mother-in-law, Princess Diana, frequently toted around an earlier version of the D-Bag. Diana’s bag was a more structured take on the classic – and hers was a caramel-hued brown, as compared to Kate’s gray.

Antony Jones/UK Press via Getty

And no, the “D” in D-Bag isn’t a coincidence: Diana was such a big fan of her D-Bag that the brand posthumously named it for her.

It’s not the only Tod’s bag Kate owns: Back in 2010, she wore the brand’s G-Bag in tan to a polo match.

David Hartley/Rupert

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