Catherine, Princess of Wales, was not at Royal Ascot on Wednesday, with a royal source citing her need for balance as she returns to public engagements after being treated for cancer last year.

Britain's Catherine, Princess of Wales, who is recovering from cancer, has pulled out of attending the Royal Ascot race meeting, her Kensington Palace office said on Wednesday. Catherine, also known as Kate,

Catherine has slowly returned to public events after cancer treatment and had been expected in the procession of Royal Ascot, but she abruptly canceled.