Katherine Middleton first met Prince William in 2001 at the University of St Andrews in Scotland. Over the years, her fashion style has changed significantly, pursuing a chic country style. Royal watchers believe that she created the "Catherine effect" from the beginning of her relationship with William. Her ability to combine luxury and casualness has become understandable to many, despite her relationships with top designers. With the help of stylist Natasha Archer, Catherine has built a diverse royal wardrobe.

This has been reflected in many of her various activities, including charity work and state events. In 2024, the princess faced the challenges of cancer prevention treatment but maintained her fashion sense, even when making fewer public appearances. Observers noted that her outfits often honored those who are dealing with health issues. Catherine wore a stunning one-shoulder Alexander McQueen gown adorned with a floral strap, complemented by sparkling earrings and a simple handbag.

Fashion expert Elizabeth Holmes praised the modern wedding style of the dress, while fans loved its elegant simplicity that highlighted Catherine's timeless beauty. Her red dress featured an asymmetrical neckline and an A-line silhouette, making it a standout choice. Stylish drop earrings and a matching handbag completed the outfit, which Archer described as the perfect blend of modern elegance and tradition. Just two months after giving birth, Catherine stunned in a pink Alexander McQueen coat dress with pearl buttons and a structured collar, teamed with a Jane Taylor hat and suede heels, oozing royal sophistication.

She also wore a pale blue Elie Saab dress with a bow neckline and polka dot overlay, suitable for Ascot, paired with a Philip Treacy hat and silver heels. Fans and experts alike admired the subtle colours and intricate details. On another occasion, Catherine opted for a purple Amelia Wickstead suit, teamed with blue suede shoes and sapphire earrings, adding a touch of royalty to her look. Elizabeth Holmes noted that the outfit echoed the style of the late Queen Elizabeth, while others praised its professional appeal.

Catherine made a bold statement in a scarlet Jenny Packham dress with a lotus crown, historically significant as it was worn by the Queen Mother, receiving praise for its regal elegance. Overall, Katherine’s fashion evolution highlights her talent for combining contemporary trends with classic grace. Her choices reflect her personal style and royal status, inspiring fashion lovers across the globe.