Rarely seen while dating Prince William, Kate developed into a working royal.
Speaking to Express.co.uk, he suggested that stylist and lecturer Anthony McGrath at the Fashion Retail Academy in London be subtly preparing for his future role.
The Duchess of Cambridge used her changing style options to show her place in the royal family.
Anthony said: “When Kate switched to the role of Duchess of Cambridge, her style inevitably emerged.
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“Ever since Kate came to prominence, she has always been a traditional dresser, whether she wants to prove herself to the royal family or her personal style, who knows, but she is rarely seen.
“However, since she married Prince William and officially became a member of the Royal Family, her dress has certainly changed more modestly.”
There are certain royal style rules that those in the family follow.
For example, it is known that royal women are encouraged to wear tights and ditch heels.
“She also introduced A-Lines dresses in a variety of colors, fancy hats for formal events and closed-toe shoes. Stockings also became a ‘must’ every time she wore a dress that bare her legs.”
While Kate shows her respect for the royal family with well thought out fashion choices, her wardrobe is what most people want.
Items worn by the Duchess often sold out quickly and she was able to build a signature style that was modest yet in trend.
This helped Royal to show its own style while preparing for the changing royal status.
Anthony said: “Although the Duchess-valued wardrobe is very certain for her now, we must give her credit for not being true to who she is and adapting herself to something completely different.
“Slowly, but surely, she has improved her style over the years and her style will suit the future queen.”
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How did Kate Middleton become a prince?
In the early stages of life
Kate Middleton, or Catherine, Duchess of Cambridge, was born on 9 January 1982 in Royal Berkshire Hospital, Reading, England.
She was born to Michael and Carol Middleton, a former flight dispatcher and air hostess. The couple founded a party supply company called Party Pieces in 1987 – now worth $ 30 million.
Kate has a younger sister, Pippa Matthews, 34, and a younger brother, James Middleton, 31.
Kate and her family moved to Amman, Jordan in 1984, where the future Duchess was educated at an English-speaking nursery school.
After returning to Berkshire, the family sent Kate to a private school, St Andrews School. She studied briefly in the downhouse before moving to Marlborough College where she boarded.
For university Kate attended St. Andrews University in Fife, Scotland. Here she received an Undergraduate MA (2: 1 Hans) in Art History.
Relationship with Prince William
While Kate is studying Prince William in St. Andrews, the two live in St. Salvatore’s Hall. Notably, William reportedly took a fancy to Kate after wearing a Kate-to-dress at a fashion show.
In 2003, the couple began dating and lived together for their second year at university.
The couple separated in April 2007, but reunited in October.
Prince William proposed to Kate Middleton in October 2010 with an engagement ring from his late mother, Princess Diana. The couple was on holiday in Kenya at the time.
On April 29, 2011, they watched the show live with 26 million people in Westminster Abbey.
Kate dressed up as Alexander McQueen on the big day, worth 250,000.
Kate received the title of “Her Royal Highness the Duchess of Cambridge” and became Duchess of Cambridge that day.