Kate Middleton is keeping her loved ones close.

As the Princess of Wales made her first speech since announcing her 2024 cancer diagnosis, she took the stage donning a deeply meaningful ring stack that gave a sweet nod to Prince William and his mother Princess Diana .

Indeed, Kate attended the Future Workforce Summit in London Nov. 18 sporting her late mother-in-law's sparkling blue sapphire and diamond engagement ring , her gold wedding band, a gemstone eternity band and a diamond pavéd band.

Kate first showed off the eternity ring—the Etincelle de Cartier band featuring 19 brilliant-cut diamonds and sapphires, respectively—during a video for the 2024 Paris Olympics' Closing Ceremony in August, following her chemotherapy treatments.

She topped off her stack with

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