Miss Middleton's Wedding Ring

Prince William and Catherine Middleton chose Wartski to make the Wedding Ring for Miss Middleton.The ring has been fashioned from a piece of Welsh gold that was given to Prince William by The Queen shortly after the engagement was announced. 
The ring will be carried to Westminster Abbey by Prince William’s Best Man Prince Harry on the wedding day.There will be only one ring, in accordance with the Couple's wishes.

The Bridegroom and Best Man Uniforms

Prince William has chosen to wear the uniform of Colonel of the Irish Guards on his Wedding Day.  Prince William, who is commissioned in all three Armed Services, and who has served actively with the Army (The Household Cavalry Regiment) and with the Royal Air Force (Search and Rescue Force), chose to wear the uniform of his senior honorary appointment in the Army.
Prince Harry will wear the uniform of a Captain of the Household Cavalry (Blues and Royals).