An employee poses with waxwork models of

An employee poses with waxwork models of Britain's Catherine, Duchess of Cambridge (2R) and Prince William (R) during their unveiling at Madame Tussauds waxwork museum in central London on April 4, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

A picture shows waxwork models of Britai

A picture shows waxwork models of Britain's Catherine, Duchess of Cambridge (L) and Prince William (R) during their unveiling at Madame Tussauds waxwork museum in central London on April 4, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

An employee (L) poses with waxwork model

An employee (L) poses with waxwork models of Britain's Catherine, Duchess of Cambridge (2R) and Prince William (R) during their unveiling at Madame Tussauds waxwork museum in central London on April 4, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

A picture shows waxwork models of Britai

A picture shows waxwork models of Britain's Catherine, Duchess of Cambridge (L) and Prince William (R) during their unveiling at Madame Tussauds waxwork museum in central London on April 4, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

An employee (L) poses with waxwork model

An employee (L) poses with waxwork models of Britain's Catherine, Duchess of Cambridge (2R) and Prince William (R) during their unveiling at Madame Tussauds waxwork museum in central London on April 4, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

A picture shows waxwork models of Britai

A picture shows waxwork models of Britain's Catherine, Duchess of Cambridge (L) and Prince William (R) during their unveiling at Madame Tussauds waxwork museum in central London on April 4, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)

Madame Tussauds London Introduces The Duke And Duchess Of Cambridge To The Royal Line Up

LONDON, UNITED KINGDOM - APRIL 04: New wax figures of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge are being revealed at Madame Tussauds on April 4, 2012 in London, England. (Photo by Stuart Wilson/Getty Images)