The Duchess of Cambridge (and her cute baby bump) arrived at Westminster Abbey on Tuesday to pay her respects to Queen Elizabeth II on the 60th anniversary of her coronation.

A heavily pregnant Kate Middleton dressed up the royal bump in a pretty peach coat by one her favourite British designers, Jenny Packham, a matching lace dress and the same Jane Taylor hat she wore to the Queen's Diamond Jubilee last October.

Other guests included Princesses Eugenie and Beatrice, the Earl and Countess of Wessex, Peter Phillips and his wife Autumn, Zara Phillips and her husband the former England rugby player Mike Tindall.

Royal watchers better savour this moment because the event marks one of Duchess Kate's last appearances before she goes on maternity leave. The yummy mummy-to-be's last official engagement will be on June 13, when she is slated to christen a cruise ship.

So what will Princess Kate wear once she goes "in hiding"? Will she only be allowed to wear nude tones? Is black allowed? Will the Queen let her wear a fascinator and an Alexander McQueen gown to bed? If only we could be a fly on the wall at Middleton's and Prince William's home.

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  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge and Prince Harry leave Westminster Abbey following the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge speak with Zara Philips (right), as they leave Westminster Abbey, in central London, after a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge and Prince Harry leave Westminster Abbey following the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duchess of Cambridge leaves Westminster Abbey following the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge leave Westminster Abbey following the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Queen Elizabeth II leaves Westminster Abbey following the service to celebrate the 60th anniversary of the Coronation of the Queen at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Queen Elizabeth II and members of the Royal family leave Westminster Abbey following the service to celebrate the 60th anniversary of the Coronation of the Queen at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duchess of Cambridge during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Labour Party leader Ed Miliband and Prime Minister David Cameron during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge and Prince Harry during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Queen Elizabeth II and members of the Royal family during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Queen Elizabeth II and members of the Royal family during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Queen Elizabeth II and members of the Royal family during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge speak with the Dean of Westminster Abbey John Hall, as they leave Westminster Abbey, in central London, after a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge speak with the Dean of Westminster Abbey John Hall, as they leave Westminster Abbey, in central London, after a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    Prime Minister David Cameron giving a bible reading during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duchess of Cambridge during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    Prime Minister David Cameron giving a bible reading during the service to celebrate the 60th anniversary of the Coronation of Queen Elizabeth II at Westminster Abbey, London.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge speak with Zara Philips (right), as they leave Westminster Abbey, in central London, after a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge leave Westminster Abbey, in central London, following a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duchess of Cambridge (left) speaks to Zara Phillips outside Westminster Abbey, in central London, following a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • Service Of Celebration Of The 60th Anniversary Of The Queen's Coronation

    LONDON, UNITED KINGDOM - JUNE 04: Catherine, Duchess of Cambridge attends a service to mark the 60th anniversary of the Queen's Coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Samir Hussein/WireImage)

  • Service Of Celebration Of The 60th Anniversary Of The Queen's Coronation

    LONDON, UNITED KINGDOM - JUNE 04: Catherine, Duchess of Cambridge attends a service to mark the 60th anniversary of the Queen's Coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Samir Hussein/WireImage)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Princess Beatrice and Princess Eugenie attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration Of The 60th Anniversary Of The Queen's Coronation

    LONDON, UNITED KINGDOM - JUNE 04: Catherine, Duchess of Cambridge attends a service to mark the 60th anniversary of the Queen's Coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Samir Hussein/WireImage)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Catherine, Duchess of Cambridge attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Lady Louise Windsor and Sophie Rhys-Jones, Countess of Wessex attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince Harry, Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Catherine, Duchess of Cambridge attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Catherine, Duchess of Cambridge attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince Philip, Duke of Edinburgh and Queen Elizabeth II attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Camilla, Duchess of Cornwall attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince Philip, Duke of Edinburgh and Queen Elizabeth II attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Queen Elizabeth II attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Princess Anne, Princess Royal attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Sophie Rhys-Jones, Countess of Wessex attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince Charles, Prince of Wales attends service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Princess Beatrice and Princess Eugenie attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Prince Andrew, Duke of York attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Camilla, Duchess of Cornwall attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Princess Michael of Kent attends a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Service Of Celebration For The 60th Anniversary Of The Queen's Coronation

    LONDON, ENGLAND - JUNE 04: Princess Michael of Kent and Prince Michael of Kent attend a service marking the 60th anniversary of the Queen's coronation at Westminster Abbey on June 4, 2013 in London, England. (Photo by Neil P. Mockford/FilmMagic)

  • Britain's Prince William and Kate, Duchess of Cambridge arrive for a service to celebrate the 60th anniversary of the coronation of Britain's Queen Elizabeth II at Westminster Abbey, London, Tuesday, June 4, 2013. (AP Photo/Alastair Grant)

  • Kate Duchess of Cambridge

    Kate, Duchess of Cambridge, smiles as she arrives for a service to celebrate the 60th anniversary of the coronation of Britain's Queen Elizabeth II at Westminster Abbey, London, Tuesday, June 4, 2013. (AP Photo/Alastair Grant)

  • Britain's Queen Elizabeth II and her husband Prince Philip, left, arrive for service to celebrate the Queen's 60th anniversary of her coronation at Westminster Abbey, escorted by The Dean of the Abbey Dr John Hall in London, Tuesday, June 4, 2013. (AP Photo/Alastair Grant)

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge arriving at Westminster Abbey, in central London, ahead of a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duchess of Cambridge arriving at Westminster Abbey, in central London, ahead of a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

  • 60th anniversary Queen Elizabeth II's coronation

    The Duke and Duchess of Cambridge with Prince Harry arriving at Westminster Abbey, in central London, ahead of a service of celebration to mark the 60th anniversary of Queen Elizabeth II's coronation.

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