25/30
REUTERS/Phil Noble
Princess Maha Chakri Sirindhorn of Thailand
The Thai princess is said to be the royal representative for her country's king and queen at the wedding.
26/30
AP Photo/Alastair Grant
Sultan of Brunei Hasanal Bolkiah
William and the Sultan don't just share an aristocratic upbringing, they both studied at the Royal Military Academy Sandhurst.
27/30
Pascal Le Segretain/Getty Images
Deputy Prime Minister Nick Clegg & Miriam Gonzalez
Clegg was active in the student theater while studying at Cambridge University and acted alongside Helena Bonham Carter in a play directed by Kate Winslet's ex-husband Sam Mendes.
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Pascal Le Segretain/Getty Images
House of Commons Speaker John Bercow & Sally Bercow
Parliamentary? Yes. Stodgy? Oh, hell no.
29/30
AP Photo/Martin Meissner
Prince Albert of Monaco & Charlene Wittstock
The son of Princess Grace and his South African swimmer fiancée will marry this summer.
30/30
CARL DE SOUZA/AFP/Getty Images
King Mswati III of Swaziland
The controversial king's invite to the royal wedding caused a number of protests.