Princess Kate 'at the centre of Team Windsor' as she backs Prince William

Kate has developed what commentator Hilary Fordwich described as "a ruthless discipline in her regimented daily routine and commitment to self-improvement".

Fordwich told Fox News Digital that Kate "divides her time meticulously between parenting, supporting the heir to the throne, and her royal duties and manages to fit in an intense workout regime."

The 43-year-old combines traditional royal duties with a modern approach to family life.

Her dedication to duty is seen as essential for the monarchy's relevance and continuity, according to royal commentators.

Kate has emerged as the most popular member of the Royal Family and is "very much seen as a player at the centre of team Windsor", according to Simon Lewis, a former Buckingham Palace communications chief.

Royal author Valentine Low told People that the Princess has "developed a toughness" behind Palace doors as she supports her husband.

"She takes things seriously – and thank goodness for that," one source told the outlet. Low explained that whilst Kate maintains "this public image of being nice and smiley", she is actually "strong-minded, strong-willed, and prepared to fight for what she wants and what she thinks is right".

Her influence over the House of Windsor is said to be greater than once imagined, as she supports Prince William, the heir to the throne.

Fordwich noted that Kate's "cancer diagnosis and her personal decision to record a video for the nation demonstrated her grace, composure and sense of duty".

The commentator added that "the public admired her humanity and ability to weather storms without either drama or complaining".

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Royal commentators predict Kate will be quickly embraced by the public as Queen when the time comes. Fordwich is adamant that the Princess's "future is looking bright", citing her "admirable stoicism and discretion, which she has consistently displayed during difficult periods".

"Without a doubt, Princess Catherine's toughness is a brilliant combination of resilience, self-discipline and emotional maturity – qualities which have rendered her the most popular of royals and crucial for the monarchy's future stability as well as public image," Fordwich told Fox.

The commentator emphasised that Kate represents "a vital anchor for the future of the monarchy" in an ever-changing world.

Polling shows that "the British public's faith in the monarchy is bolstered by Catherine's visible strength and reliability", particularly as she and William represent "a solid collective future" during chaotic times.