Recently, the princess had swapped the famous jewel out for a ring stack. After announcing the end of her chemotherapy treatment in September, Kate Middleton has slowly returned to public life. This past Saturday,

In fact, until this past weekend, Kate hadn't worn her engagement ring in any public appearance—or any images or videos shared on Kensington Palace's social media channels—since attending the Wimbledon men's finals in July with her sister, Pippa, and her daughter, Princess Charlotte.

It was one of many nods made to Princess Diana on Remembrance Day.

Kate Middleton has made few public appearances over the last year amidst her cancer journey; yet, during those rare engagements, she has been photographed without her sapphire and diamond engagement ring. Instead, she has chosen to wear an eternity band in its place.