Kate Middleton & Prince William's Wedding Honored with Royal Stamps
03/29/2011 AT 08:35 AM EDT
The stamps, which will be available for purchase on April 21 – notably the Queen's Birthday – will feature two portraits shot by world-renowned photographer Mario Testino. The first stamp replicates the official engagement portrait taken in the Royal Council Chamber, while the second is a less formal shot snapped in the Palace's Cornwall Room.
This is not the Prince's first time on a Royal Mail stamp. He was previously featured on a sheet of stamps celebrating The Queen Mother's 100th birthday in August of 2000, and, in 2003, his 21st birthday was commemorated by stamp as well.
These specific engagement stamps, which can be ordered online starting April 7, mark the beginning of a new tradition, as Prince William is the first of the queen's grandchildren to have his wedding commemorated by the Royal Mail. Before these stamps could be released, they were seen by Prince WIlliam and the Queen, who gave them their, well, stamp of approval.