Unless he's royal himself, no.
the royal wedding is the wedding between Catherine Middleton and prince William of England
Prince William and Catherine Middleton's wedding was held as a traditional Church of England service (Church of England being the official religion of the UK and the British Royal Family).
The Duchess of Kent, wife of Prince Edward, Duke of Kent who is the Queen's first cousin.
A suit...it was a wedding.
The Best Man at the Royal Wedding of Prince William & Kate Middleton was Prince Harry, Prince William's brother.
She was Prince Harry's date to the wedding.
Prince William wore the uniform of Colonel of the Irish Guards on his wedding day.
yep
Yes
No. Donald Trump has not been invited to the royal wedding of Prince William and Kate Middleton.
The British taxpayers are on the hook for the wedding.
Traditionally in Royal marriages only the brides where wedding rings.