Bridesmaid Margarita Armstrong-Jones, page boy Tom Pettifer and bridesmaid Lady Louise Windsor arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011

Bridesmaid Lady Louise Windsor arrives to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London

Lady Louise Windsor, is the elder child of Prince Edward, Earl of Wessex, and Sophie, Countess of Wessex, and the youngest granddaughter of Queen Elizabeth II and the Duke of Edinburgh.

Prince Harry and Lady Louise Windsor ride in a carriage procession to Buckingham Palace following the marriage of Their Royal Highnesses Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge at Westminster Abbey