The artist Willard Wigan told the BBC he wanted to create "the smallest, biggest tribute" to the royal couple for their wedding day. You can see more of Wigan's micro-sculptures on his website.
And more photo coverage in our slideshows:
Life of Kate Middleton
Life of Prince William
Preparations for the royal wedding.
Wacky royal wedding memorabilia.
The royal guest list - who's coming to the wedding?
A royal courtship.
History of British royal weddings.