Grant Harrold, who works for the royal family, said that Kate was ignored at William's birthday party.

William and Kate first met in 2001 while attending St. Andrews University.

Before they were married in 2011, they dated for around ten years.

In addition to George and Charlotte, they also have a son named Louis.

Upon the passing of Queen Elizabeth II, they have assumed the titles of Prince and Princess of Wales.

When William dies, George will become second in line to the throne.

The pair will preserve their Cambridge titles and add Charles' and Camilla's Cornwall titles to their own.

The butler felt "privileged and honored" to be in the presence of the couple.

William and Kate are "amazing" and "wonderful fun," according to the butler.