Looking particularly radiant and morning-sickness free, the Duchess of Cambridge seemed to be showing the merest hint of a baby bump as she admired her new portrait at the National Portrait gallery.

The blooming Duchess, clasped her hands in front of her as she smiled, wearing a burgundy dress by Whistles.

She joined by her husband the Duke for a private viewing of the painting on Friday morning before it goes on display to the public.

kate pregnant

The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery

Kate has been suffering from a rare form of pregnancy sickness but looked well and smiled as she chatted to the artist.

She told him: "It's just amazing, I thought it was brilliant."

kate

The official portrait of the Duchess of Cambridge, by Paul Emsley

William also had high praise for the painting, saying: "It's beautiful, it's absolutely beautiful."

The Cambridges later attended a private breakfast reception at the London gallery to mark the unveiling.

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  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge talks to artist Paul Emsley after viewing his new portrait of her during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge talks to artist Paul Emsley after viewing his new portrait of her during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge meet artist Paul Emsley after viewing his new portrait of the Duchess, during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge talks to artist Paul Emsley after viewing his new portrait of her during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge meet artist Paul Emsley after viewing his new portrait of the Duchess, during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge talks to artist Paul Emsley after viewing his new portrait of her during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge leaves the National Portrait Gallery in London today after viewing a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge arrive at the National Portrait Gallery in London today to view a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duke of Cambridge leaves the National Portrait Gallery in London today after viewing a newly commissioned portrait of his wife, the Duchess of Cambridge, by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge leave the National Portrait Gallery in London today after viewing a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge meet artist Paul Emsley after viewing his new portrait of the Duchess, during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    Paul Emsley by his new portrait of the Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    Paul Emsley by his new portrait of the Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge meet artist Paul Emsley after viewing his new portrait of the Duchess, during a private viewing at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge arrive at the National Portrait Gallery in London today to view a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge leaves the National Portrait Gallery in London today after viewing a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge leaves the National Portrait Gallery in London today after viewing a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge arrive at the National Portrait Gallery in London today to view a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duke and Duchess of Cambridge arrive at the National Portrait Gallery in London today to view a newly commissioned portrait of the Duchess by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The Duchess of Cambridge after viewing a new portrait by Paul Emsley of herself at the National Portrait Gallery in central London.

  • Catherine, Duchess of Cambridge Portrait By Paul Emsley Is Unveiled At The National Portrait Gallery

    Media representatives gather in front of British artist Paul Emsley's portrait of Catherine, The Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London on January 11, 2013. This is the first official portrait of the Duchess and was completed after two sittings at the artist's studio and Kensington Palace. AFP PHOTO/Leon NEAL - RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - (Photo credit should read LEON NEAL/AFP/Getty Images)

  • Catherine, Duchess of Cambridge Portrait By Paul Emsley Is Unveiled At The National Portrait Gallery

    Media representatives gather in front of British artist Paul Emsley's portrait of Catherine, The Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London on January 11, 2013. This is the first official portrait of the Duchess and was completed after two sittings at the artist's studio and Kensington Palace. AFP PHOTO/Leon NEAL - RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - (Photo credit should read LEON NEAL/AFP/Getty Images)

  • Catherine, Duchess of Cambridge Portrait By Paul Emsley Is Unveiled At The National Portrait Gallery

    British artist Paul Emsley poses in front of his portrait of Catherine, The Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London on January 11, 2013. This is the first official portrait of the Duchess and was completed after two sittings at the artist's studio and Kensington Palace. AFP PHOTO/Leon NEAL - RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - (Photo credit should read LEON NEAL/AFP/Getty Images)

  • Catherine, Duchess of Cambridge Portrait By Paul Emsley Is Unveiled At The National Portrait Gallery

    British artist Paul Emsley poses in front of his portrait of Catherine, The Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London on January 11, 2013. This is the first official portrait of the Duchess and was completed after two sittings at the artist's studio and Kensington Palace. AFP PHOTO/Leon NEAL - RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - (Photo credit should read LEON NEAL/AFP/Getty Images)

  • Catherine, Duchess of Cambridge Portrait By Paul Emsley Is Unveiled At The National Portrait Gallery

    British artist Paul Emsley poses in front of his portrait of Catherine, The Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London on January 11, 2013. This is the first official portrait of the Duchess and was completed after two sittings at the artist's studio and Kensington Palace. AFP PHOTO/Leon NEAL - RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - (Photo credit should read LEON NEAL/AFP/Getty Images)

  • Catherine, Duchess of Cambridge Portrait By Paul Emsley Is Unveiled At The National Portrait Gallery

    British artist Paul Emsley poses in front of his portrait of Catherine, The Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London on January 11, 2013. This is the first official portrait of the Duchess and was completed after two sittings at the artist's studio and Kensington Palace. AFP PHOTO/Leon NEAL - RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION - (Photo credit should read LEON NEAL/AFP/Getty Images)

  • Duchess of Cambridge portrait unveiled

    Paul Emsley by his new portrait of the Duchess of Cambridge after its unveiling at the National Portrait Gallery in central London.

  • Duchess of Cambridge portrait unveiled

    The brother and father of the Duchess of Cambridge, James and Michael (right), leave the National Portrait Gallery in central London, after viewing the new portrait of her by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The father of the Duchess of Cambridge, Michael, leaves the National Portrait Gallery in central London, after viewing the new portrait of her by Paul Emsley.

  • Duchess of Cambridge portrait unveiled

    The mother and sister of the Duchess of Cambridge, Carole (left) and Pippa, leave the National Portrait Gallery in central London, after viewing the new portrait of her by Paul Emsley.

  • Paul Emsley

    Artist Paul Emsley poses by his newly-unveiled first official portrait of Kate, Duchess of Cambridge, on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • A newly-commissioned portrait of Kate, Duchess of Cambridge, by artist Paul Emsley hangs at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Paul Emsley

    Members of the media talk to artist Paul Emsley, center right, in front of his newly-commissioned portrait of Kate, Duchess of Cambridge, on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Members of the media gather in front of a newly-commissioned portrait of Kate, Duchess of Cambridge, by artist Paul Emsley on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Members of the media photograph the newly-commissioned portrait of Kate, Duchess of Cambridge, by artist Paul Emsley on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Paul Emsley

    Artist Paul Emsley poses for photographers next to his newly-commissioned portrait of Kate, Duchess of Cambridge, on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Paul Emsley

    Artist Paul Emsley poses for photographers next to his newly-commissioned portrait of Kate, Duchess of Cambridge, on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Paul Emsley

    Artist Paul Emsley poses for photographers next to his newly-commissioned portrait of Kate, Duchess of Cambridge, on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

  • Paul Emsley

    Artist Paul Emsley poses for photographers next to his newly-commissioned portrait of Kate, Duchess of Cambridge, on display at the National Portrait Gallery in London, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)