The Princess of Wales arrived in style at St George's Chapel in a £420 Self Portrait dress, as she walked with other senior members of the Royal Family for the Easter Sunday Service.
The number is designed with a slim-fitting silhouette and features "some special amendments".
Catherine has worn the cream midi dress in the past, previously seen during a joint engagement with Princess Anne.
Royal fashion expert and celebrity stylist Miranda Holder previously commented on the dress, saying: "Her outfit consisted of a dress made to look like a belted blazer and skirt."
The Princess of Wales opted for a dress from 'one of her favourite contemporary brands'
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The amendments featured "embroidered pineapples, in complementary cream thread," which, according to Miss Holder, has become a symbol frequently worn by people struggling with fertility.
"It served as the perfect finishing touch to Catherine's outfit, demonstrating her solidarity for the many midwives training at the college," she told Fabulous.
Catherine matched her classic style with a new, custom wide-brim saucer hat by Sean Barrett, decorated with delicate floral accents.
Peter Phillips' fiancée, Harriet Sperling, joined the Royal Family for the service in a Serena Cornflower Polka Dot Blouse, matched with an Arabella Cornflower Polka Dot Skirt.
Catherine matched her classic style with a new, custom wide-brim saucer hat by Sean Barrett
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The two items, which bought together cost £700, feature a round neckline with a delicate tie at the collar and additional decorative bow ties down the front.
Both Catherine and Ms Sperling complemented their outfits with high heels as they made their way to the Easter Matins service.
The Prince and Princess of Wales led the way with their three children, Prince George, Princess Charlotte and Prince Louis.
Princess Beatrice and Princess Eugenie are notably absent from the ceremony, having made alternative plans with the approval of the King.
Harriet Sperling joined the Royal Family for the service in a Serena Cornflower Polka Dot Blouse
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Prince Edward and his son James, Earl of Wessex, were both in attendance, as well as Princess Anne and her husband, Sir Timothy Laurence.
Peter Phillips arrived with his fiancée, Harriet Sperling, who recently announced they will be getting married on June 6, while Zara and Mike Tindall were not in attendance.
Sophie, Duchess of Edinburgh, and her daughter, Lady Louise Windsor, were also not in attendance.
Prince William could be seen saying "Happy Easter" to the King and Queen, who were driven down to St George's Chapel as other senior members walked.
Senior members of the Royal Family made their way to St George's Chapel for the Easter Sunday service
| PANumerous fans were in attendance to get a glimpse of the royals as they made their way to the Easter Matins service.
The sun crept out as the royals arrived on what had been a blustery and chilly day in Berkshire.
In one sweet moment upon arrival, the King greeted his grandson, Prince Louis, by putting his arm out and appearing to touch his cheek before heading into the Chapel.