Sarah’s unique choice of footwear seems to speak volumes. The slogan, famously favoured by the late Queen Elizabeth II, is often interpreted as the ultimate royal stiff upper lip — a quiet, composed dismissal of public drama.

Fergie’s outfit for the evening was otherwise understated, with a classic military-style blazer featuring gold buttons and crimson cuffs paired with a black mini dress.

Allowing her velvet slippers to draw in most of the attention. The phrase “Never Complain, Never Explain” was embroidered in elegant script across both feet.

Sarah’s fashion choice subtly referenced her royal past while also reinforcing her individual identity.

The Duchess, who has continued to show public support for Prince Andrew, was seen smiling as she posed for photographs with guests at the private gathering in central London.

She was spotted in a carousel of images shared to her social media, appearing at ease with a bright smile and composed presence. Her interactions looked relaxed and confident as she signed copies of her novel and chatted with those in attendance.

This came after Sarah’s recent trip to Italy, where she made an impression at the star-studded Notti Toscane event hosted by Andrea Bocelli last month.

She wore an emerald green gown by British designer Safiyaa, worth over £1,700, featuring dramatic cape sleeves and a keyhole neckline — a striking example of timeless elegance that blended sophistication with contemporary flair.

With her auburn hair softly styled and accessories kept minimal, the bold silhouette of the dress took centre stage.