Kate Middleton says that she "didn't have to have" a cold cap during her chemotherapy treatment, Katherine Field, who met the princess during her visit to the Royal Marsden Hospital, tells PEOPLE.

Specifically, her hat is what gave it away. Yesterday Kate Middleton stepped out for the royal family's ... the Princess of ...

Since she became the Princess of Wales, Kate Middleton has worn playful pantsuits and a plethora of polka dots.

The Prince of Wales wrote that he and the couple’s three kids — Prince George, Princess Charlotte and Prince Louis — “are so ...

Kate Middleton and Queen Camilla must have known how much royal fans loved the fact that the Princess of Wales and Princess ...

Kate Middleton and Prince ... coat paired with a matching pillbox hat and a coordinating blue and green tartan scarf. She finished the festive look with black trousers and black boots.

Kate Middleton became the Princess of Wales after ... She completed the look with a black hat, semi-sheer tights, leather heels, and the late Queen's pearl earrings from her Silver Jubilee.

Yesterday Kate Middleton stepped out for ... a hunter green Alexander McQueen coat with black suede boots, a cozy tartan scarf, and a green hat that expertly matched her jacket and featured ...