According to fashion expert Miranda Golder, the reason lies most likely in the fact that Katherine now has a new status.

Princess of Wales / Photo: Getty Images

"Princess Kate's new costume collection may indicate a change in her role in the royal family," the expert told express. Earlier last week, Kate visited Streets of Growth, a non-profit youth aid charity. That day, she wore a fitted jacket, a white top underneath, and flared trousers by Roland Mouret. The princess paired the costume with beige shoes from Gianvito Rossi.

Princess of Wales / Photo: Getty Images

Catherine came to the Royal Navy Air Base Yeovilton in a black double-breasted jacket from Holland Cooper and flute pants, the princess complemented the suit with Gianvito Rossi suede shoes with stable heels and Kiki McDonough earrings.

Princess of Wales / Photo: Getty Images

Princess of Wales / Photo: Getty Images

Earlier, the princess visited HMP High Down prison in Surrey, where she showed off an elegant look in a navy blue pantsuit from Alexander McQueen, under which she wore a milky white top and suede shoes from Gianvito Rossi with heels.

Catherine, Princess of Wales / Photo: Associated Press

Kate's fashionable costumes are luxurious, sophisticated, and accentuate her gorgeous figure.