Prince William payed a visit to a special elderly woman in a British nursing home last week to deliver a personal apology after she complained about the birthday cards sent to her by the Queen.

All centenarians receive a card from the Queen and Catherine Masters, at 109, was no different. Catherine  wrote to Queen Elizabeth because the past five birthday cards she received showed the royal monarch wearing the same yellow dress.

This time, Prince Williams decided to pay her a personal visit and address the matter. The employees at the Grange Care Centre in Oxford said they received about five minutes notice of Prince William’s arrival last Friday.

“It was a total shock and Catherine was speechless. Prince William came in and she asked if he was real. She squeezed his hand to check,” senior nurse manager Wendy Mead told the BBC.

Masters told an Oxford Mail newspaper she told the prince, who is second in line to the British throne behind his father, Prince Charles, that she thought the Queen should wear a blue or white dress.

William assured Masters the Queen would wear another dress for the next photo.The pair, who spent about 40 minutes chatting over tea and scones, also reportedly discussed horse racing and compared recipes for shepherd’s pie.