Spotted: Kate Middleton on a rare family outing.

The Princess of Wales was photographed arriving by car with Prince William, who was the driver, and their eldest son Prince George, 11, to attend a Sunday service at the Crathie Kirk church in the Scottish village of Crathie, near the royal family’s Balmoral estate.

It marked the first in-person public appearance by Kate, who has been undergoing cancer treatments, in more than a month. The princess wore a beige plaid Holland Cooper jacket, brown fedora with feathers and dangling gold earrings, as seen in photos published by HELLO! magazine.

Not spotted: Kate and William’s youngest children, Princess Charlotte, 9, and Prince Louis, 6.

The couple was, however, joined at the service by King Charles III—who is also battling cancer—and his wife Queen Camilla. Both wore traditional Scottish tartan outfits, with the monarch sporting a red and green kilt and gray blazer. Also seen arriving: His brother Prince Edward, who was joined by his wife Sophie, Duchess of Edinburgh, plus several other royal family members.