Kate Middleton makes rare public appearance.

Kate Middleton makes rare public appearance.

Kate Middleton made a rare public appearance on Sunday, as the Princess of Wales continues to undergo cancer treatments.

Kate, Prince William, and their oldest son Prince George attended a church service at Balmoral Estate.

They were joined by other members of the royal family, including King Charles and Queen Camilla.

Princess Kate revealed in March that she was undergoing chemotherapy.  Her last public appearance as at Wimbledon in July.

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