Kate Middleton speaks with Prime Minister David Cameron and his wife, Samantha, during the closing ceremony on Sunday.

The duchess of Cambridge enjoys the closing ceremony on Sunday night.

(From left) IOC president Jacques Rogge, Prince Harry and the duchess of Cambridge take in the closing ceremony.

Kate Middleton talks to members of Team Great Britain's field hockey team after their bronze medal match against New Zealand on Day 14.

MORE: Full Olympics results.

Kate attends the women's hockey bronze medal match between New Zealand and Great Britain.

Kate is blown away by the competition in a women's hockey bronze medal match.

Kate talks to young athletes at Team GB House in the Westfield Centre.

MORE: They said what?! Keep up with all the juicy athlete tweets.

Prince Harry and Kate visit British athletes at Team GB House. The host country's athletes have done well in London after a slow start.
 

Kate has a laugh with Prince Albert II of Monaco and official team GB ambassador Robin Cousins (Front R) while watching synchronized swimming.

Kate arrives to attend the synchronized swimming competition at.

Prince Albert II of Monaco and Kate share a discussion while watching synchronized swimming.

Kate flashes her best smile during the Argentina-Britain women's field hockey semifinal, but the home team couldn't win for the duchess of Cambridge. Argentina won, 2-1, on Wednesday.

The Duchess of Cambridge goes for a walk in the boat park on Day 10 of the London 2012 Olympic Games.

Kate waves to a British competitor during the Women's Laser Radials race on Day 10 of the London 2012 Olympic Games.
 

The Duchess meets with British sailing royalty — Finn class gold-medal winner Ben Ainslie.

Kate Middleton enjoys the atmosphere with gymnasts, from left, Jennifer Pinches, Kristian Thomas and Rebecca Tunney during the artistic gymnastics men's pommel Horse final on Day 9.

Prince William and Kate Middleton attend the evening's athletics events during the women's marathon on Day 9.

MORE: Full Olympics results.

Kat Middleton and brother-in-law Prince Harry enjoy the events on Day 9 at Olympic Stadium.

MORE: Who's leading the Olympic medal count?

Kate Middleton and Prince William celebrate the British sprint team's world record at the velodrome on Day 6.

MORE: They said what?! Keep up with all the athlete tweets.

Kate speaks to a spectator during the artistic gymnastics apparatus finals on Sunday, Aug. 5.

Supporting her country in every sport, Kate watches the women's handball preliminary match between Croatia and Great Britain on Sunday.

Kate Middleton takes in the Olympic gymnastics vault competition at North Greenwich Arena in the London.

Kate Middleton seems rather pleased at the gymnastics vault competition.

Prince William (right) and Kate Middleton watch the finish of the women's heptathlon during the London 2012 Olympic Games at Olympic Stadium.
 

Hmm, we have a feeling this isn't really Kate and Prince William. Maybe that's how they are showing up at so many events.

Kate and Prince William join British Prime Minister David Cameron in the Olympic Stadium on Saturday.
 

Kate and Prince William take in Saturday's action from the Olympic Stadium.

The Duke and Duchess of Cambridge watch the women's 200-meter backstroke final Friday at the Aquatics Centre in the Olympic Park.

Kate Middleton follows the men's hockey preliminary-round match between Britain and Pakistan on Friday.
 

Prince William and Kate cheer on competitors during the women's 200-meter backstroke final Friday.

Kate Middleton, the Duchess of Cambridge, reacts while watching track cycling in the Velodrome on Thursday.

Britain's Prince William points out something to his wife, Kate, during the track cycling competition.

Prince William and wife Kate, Duke and Duchess of Cambridge, watch track cycling at the Velodrome on Thursday.

Prince William and Kate, Duchess of Cambridge, join the crowd in doing the wave while watching local favorite Andy Murray take on Nicolas Almagro in tennis.

Prince William and Kate applaud the effort of Great Britain's Andy Murray as he advanced past Nicolas Almagro in men's singles tennis on Thursday.

Prince William and Kate arrive for the start Andy Murray's victory over Nicolas Almagro at the All England Lawn Tennis Club at Wimbledon on Thursday.

Britain's Prince William and wife Kate, the Duke and Duchess of Cambridge cheer as Britain's equestrian eventing team arrives to collect their medals.

Kate Middleton is ecstatic after Australian athletes hand Prince Harry a stuffed Kangaroo.

The Duchess and Duke of Cambridge and Prince Harry cheer during the medal ceremony for team event jumping in the London 2012 Olympic Games at Greenwich Park. Their cousin,  Zara Phillips, won the silver medal.

The Duchess and Duke of Cambridge during a break in the events in the London 2012 Olympic Games at Greenwich Park. The Duchess of Cambridge, Kate Middleton, was topped the Vanity Fair's best-dressed list, which was released Tuesday.

Britain's Catherine, Duchess of Cambridge, and Britain's Prince William, the Duke of Cambridge, watch the equestrian eventing cross country phase at the 2012 Summer Olympics on Monday. The royal couple plan to attend more than 30 Olympic events.

Camilla, Duchess of Cornwall, and Britain's Catherine, Duchess of Cambridge, watch the equestrian eventing cross country phase at the Summer Olympics on Monday. William and Kate watched his cousin Zara Phillips race in the Olympic eventing horse competition. 

Kate, Duchess of Cambridge arrives at the Royal Academy of Arts in London for the UK creative industries reception hosted by the British Government supported by the Founders Forum on Monday. The duchess dazzled onlookers as she met Prime Minister David Cameron and dozens of British artists on the fringe of the London Olympics. She wore a dove gray dress by Serbian designer Roksanda Ilincic.

Kate, Duchess of Cambridge leaves the Royal Academy of Arts in London after attending the UK creative industries reception hosted by the British Government supported by the Founders Forum on Monday. The duchess tied her long hair back.

Kate is smiling. Prince William is not so sure. Did the Queen just jump from a helicopter?
 

Prince William, Kate and Prince Harry take in the opening ceremony.
 

Kate seems rather pleased during the London opening ceremonies.

Kate is seen seated behind Britain's Prime Minister, David Cameron, during the opening ceremonies July 27.
 

Prince William and Kate wait for the beginning of the opening ceremony of the London 2012 Summer Olympic Games.
 

US First Lady Michelle Obama, left, meets the Duchess of Cambridge during a reception at Buckingham Palace. The reception was held prior to the opening ceremonies on July 27.
 

Kate poses with the President of Mongolia Elbegdorj Tsakhia (on the left) and Erdene Elbegdorj at a reception at Buckingham Palace.
 

Prince William, Duke of Cambridge, and Kate Middleton, Duchess of Cambridge talk as the Olympic Torch comes to Buckingham Palace, on Day 69 of the London 2012 Olympic Torch Relay on July 26 in London, England. The Olympic flame is making its way through the capital on the penultimate day of its journey around the UK before arriving in the Olympic Stadium on Friday evening for the Olympic games' Opening Ceremony.

Prince William and his wife Kate, the Duke and Duchess of Cambridge, and Prince Harry are joined by children from the Team Britain Ambition Program as they watch Wai Ming hand over the London 2012 Olympic Torch to John Hulse during a visit to Buckingham Palace.
 

Kate, Duchess of Cambridge is being shown around by Director of the National Portrait Gallery, Sandy Nairne during her visit to 'Road to 2012 : Aiming High' exhibition at the National Portrait Gallery in London on July 19. The Duchess of Cambridge is the Patron of the National Portrait Gallery. The exhibition showcase commissioned photographs documenting the preparations for London 2012 Olympics.