Duchess Kate christens cruise ship

Kate, Duchess of Cambridge stands by controls as she tours the Princess Cruises's new ship "Royal Princess" after the ceremony to officially name her in Southampton, southern England on June 13, 2013. It is expected to be her final planned solo event before she and Prince William welcome their first child in mid-July.

Britain's Kate, Duchess of Cambridge, arrives for a naming ceremony for the Royal Princess cruise ship in Southampton, England, on June 13, 2013. It is expected to be her final planned solo event before she and Prince William welcome their first child in mid-July.

From left, Captain Tony Draper, Kate, Duchess of Cambridge, and President and CEO of Princess Cruises Alan Buckelew arrive for the Princess Cruises ship naming ceremony at Ocean Terminal on June 13, 2013, in Southampton, England.

Kate, Duchess of Cambridge, attends a Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner at a gala ceremony in Southampton, England, on June 13, 2013.

Kate, Duchess of Cambridge, attends the Princess Cruises ship naming ceremony at Ocean Terminal on June 13, 2013, in Southampton, England.

Kate, Duchess of Cambridge, attends a Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner at a gala ceremony in Southampton, England, on June 13, 2013.

Kate, Duchess of Cambridge, makes a speech during a naming ceremony for the Royal Princess cruise ship in Southampton, England, on June 13, 2013.

Kate, Duchess of Cambridge, attends a Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner at a gala ceremony in Southampton, England, on June 13, 2013.

Kate, Duchess of Cambridge smiles at Captain Tony Draper during a naming ceremony for the Royal Princess cruise ship in Southampton, England, on June 13, 2013. It is expected to be her final planned solo event before she and Prince William welcome their first child in mid-July.

Kate, Duchess of Cambridge, attends a Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner at a gala ceremony in Southampton, England, on June 13, 2013.

Kate, Duchess of Cambridge, attends the Princess Cruises ship naming ceremony at Ocean Terminal on June 13, 2013, in Southampton, England.

Captain Tony Draper, right, speaks to Kate, Duchess of Cambridge, center, during a Princess Cruises ship naming ceremony at Ocean Terminal on June 13, 2013, in Southampton, England.

Britain's Duchess of Cambridge receives an on board tour with Captain Tony Draper during the Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner on June 13, 2013, in Southampton, England.

Kate, Duchess of Cambridge, receives an on board tour with Captain Tony Draper during the Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner on June 13, 2013, in Southampton, England.

Kate, Duchess of Cambridge, receives an on board tour during the Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner on June 13, 2013, in Southampton, England.

Kate, Duchess of Cambridge, speaks to the crew during an on board tour at the Princess Cruises ship naming ceremony to officially name the new Royal Princess cruise liner on June 13, 2013, in Southampton, England.

Kate, Duchess of Cambridge, receives a tour on board after the Princess Cruises ship naming ceremony at Ocean Terminal on June 13, 2013, in Southampton, England.