That's rich! Prince charms as usher for billionaire pal

THOUSANDS of well-wishers lined the streets yesterday to see Prince William act as usher at the society wedding of the year.

- Chris Riches

Duke of Westminster Hugh Grosvenor, 33, wed Olivia Henson, 31, and, to cheers from the crowd, kissed beneath Chester Cathedral's flowered archway.

Known as "Hughie" to aristocratic friends, the Duke is estimated to be worth £10.42billion, making him Britain's richest man under 40.

He is godfather to William's son, Prince George, 10, and Prince Harry's son, Prince Archie, five.

Royal fans screamed as William, 41, smiled alongside pal William van Cutsem as they left the 11th century Cheshire cathedral.

The Prince had entered the cathedral via a side entrance while a veiled Olivia, wearing the 1906 Faberge Myrtle Leaf tiara made for Grosvenor brides to wear on their wedding day, arrived.

Bouquets The Duke's sister, Lady Edwina Grosvenor, 42, arrived with her husband, TV host Dan Snow, 45.