Photo: See Prince William and Kate Middleton's Royal Wedding Invitation

What does the most coveted wedding invitation look like? Rather plain and simple.

About 1,800 invitations to the April 29 nuptials of Prince William and Kate Middleton have been delivered.

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The all-white card, save for a little gold emblem, requests the presence to "the Marriage of His Royal Highness Prince William of Wales, K.G., with Miss Catherine Middleton." It also stipulates that attendees of the 11 a.m. ceremony are expected to dress in "uniform, morning coat or lounge suit." 

Prince William and his girlfriend will swap vows at Westminster Abbey.

What do you think of the royal invitation?