The royal wedding maid-of-honour wore a white Alexander McQueen gown
Philippa Middleton, sister of Kate Middleton and Maid of honour arrives at the West Door of Westminster Abbey in London for the wedding of Britain's Prince William and her sister, on April 29, 2011.CARL DE SOUZA
Sister of the Bride and Maid of Honour Pippa Middleton and bridesmaid Margarita Armstrong-Jones make the journey by carriage procession to Buckingham Palace following the Royal Wedding of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge at Westminster Abbey on April 29, 2011 in London, England.Peter Macdiarmid
In this image taken from video, Kate Middleton, left, receives flowers from her sister, Pippa Middleton as she arrives at Westminster Abbey for the Royal Wedding in London on Friday, April, 29, 2011.The Associated Press
Maid of Honour Pippa Middleton, sister of Catherine Middleton, and bridesmaids speak to Stephen Lamport, Receiver General of Westminster Abbey as they arrive before the wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England.WPA Pool
Maid of Honour Pippa Middleton with pageboys and bridemaids arrive to attend the Royal Wedding of Prince William to Catherine Middleton at Westminster Abbey on April 29, 2011 in London, England.Chris Jackson
Maid of Honour Pippa Middleton, Kate Middleton's sister, right, and bridesmaid Margarita Armstrong-Jones, second from left, leave the Goring Hotel for Westminster Abbey ahead of the Royal Wedding, London, Friday, April, 29, 2011.Joel Ryan
Pippa Middelton, sister of the bride Kate Middleton arrives to the wedding of Britain's Prince William and Kate Middleton in central London April 29, 2011.KAI PFAFFENBACH
Philippa Middleton, sister of Kate, Duchess of Cambridge, and Maid of Honour travels with a bridesmaid and a page boy in an Ascot Landau carriage along the Processional Route to Buckingham Palace after the wedding ceremony, in London, on April 29, 2011.BEN STANSALL
Philippa Middleton, sister of Kate, Duchess of Cambridge, and the Maid of Honour travels with a bridesmaid in an Ascot Landau carriage along the Processional Route to Buckingham Palace, in London, on April 29, 2011.LEON NEAL
Maid of honour Philippa Middleton smiles as the travels in a Semi-State Landau in London after the wedding service for Britain's Prince William and Kate, Duchess of Cambridge, on April 29, 2011.PAUL ELLIS