Not even Princess Diana, who became Princess of Wales in 1981, gave companies her official seal of approval when she held the title

Princess Kate and Prince William have shown unprecedented openness about their relationship following Catherine's cancer journey, according to sources close to the royal household. A source told People magazine that the Prince and Princess of Wales are "more open" now and "talk about their relationship together.

Kate Middleton's fashion choices have regularly inspired shoppers to purchase whatever she's wearing. And according to a new report, the Princess of Wales might soon be able to give brands in areas other than fashion her royal seal of approval.