Princess Charlotte Birthday: Her First Year In Pictures

The Duke and Duchess of Cambridge and the newborn Princess of Cambridge as they leave the Lindo Wing of St Mary's Hospital in London.

Catherine Duchess of Cambridge leave the Lindo Wing at St. Mary's Hospital in London with their new born baby daughter on May 02, 2015. The Duchess of Cambridge was safely delivered of a daughter at 8:34am this morning weighing 8lbs 3oz.

The Duke and Duchess of Cambridge and the newborn Princess of Cambridge as they leave the Lindo Wing of St Mary's Hospital in London. PRESS ASSOCIATION Photo. Picture date: Saturday May 2, 2015. See PA story ROYAL Baby. Photo credit should read: Dominic Lipinski/PA Wire

Catherine Duchess of Cambridge and Prince William, Duke of Cambridge leave the Lindo Wing at St. Mary's Hospital in London with their new born baby daughter on May 02, 2015. The Duchess of Cambridge was safely delivered of a daughter at 8:34am this morning weighing 8lbs 3oz.

Photo released by the Duke and Duchess of Cambridge of Prince George and Princess Charlotte. The photograph was taken by the Duchess in mid-May at Anmer Hall in Norfolk.

Undated handout photo released by the Duke and Duchess of Cambridge of Prince George and Princess Charlotte. The photograph was taken by the Duchess in mid-May at Anmer Hall in Norfolk.

Undated handout photo released by the Duke and Duchess of Cambridge of Prince George and Princess Charlotte. The photograph was taken by the Duchess in mid-May at Anmer Hall in Norfolk.

Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Sandringham earlier this month.

The Duke of Edinburgh (left), Queen Elizabeth II the Duchess of Cornwall (third left) and the Duke and Duchess of Cambridge (right) with Prince George and Princess Charlotte at Church of St Mary Magdalene in Sandringham, Norfolk.

Britain's Princess Charlotte is pushed in a pram by her mother Kate the Duchess of Cambridge as they arrive for Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, Sunday, July 5, 2015. (AP Photo/Matt Dunham, Pool)

Britain's Prince William, Kate the Duchess of Cambridge, their son Prince George and daughter Princess Charlotte in a pram arrive for Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, Sunday, July 5, 2015. (AP Photo/Matt Dunham, Pool)

Britain's Kate the Duchess of Cambridge carries Princess Charlotte after taking her out of a pram as they arrive for Charlotte's Christening at St. Mary Magdalene Church in Sandringham, England, Sunday, July 5, 2015. (AP Photo/Matt Dunham, Pool)

The Duke and Duchess of Cambridge with their two children, Prince George and Princess Charlotte, in a photograph taken late October at Kensington Palace in London.

This official photograph, released by Buckingham Palace on Wednesday April 20, 2016, to mark her 90th birthday, shows Queen Elizabeth II with her five great-grandchildren and her two youngest grandchildren in the Green Drawing Room, part of Windsor Castle's semi-State apartments in Windsor England. The children are: James, Viscount Severn, 8-years-old, left, and Lady Louise, 12-years-old, second left, the children of The Earl and Countess of Wessex; Mia Tindall, holding The Queen's handbag, the two year-old-daughter of Zara and Mike Tindall; Savannah 5-years-old, third right, and Isla Phillips, 3-years-old, right, daughters of The Queen's eldest grandson Peter Phillips and his wife Autumn; Prince George, 2-years-old, second right, and in The Queen's arms and in the tradition of Royal portraiture, the youngest great-grandchild, Princess Charlotte, 11-months-old, children of Prince William and Kate Duchess of Cambridge. (© 2016 Annie Leibovitz via AP) MANDATORY CREDIT

The Duke and Duchess of Cambridge with their children, Princess Charlotte and Princess George, enjoy a short private break skiing in the French Alps.

The Duke of Cambridge cuddles Princess Charlotte, as the Duke, Duchess and their family enjoy a short private break skiing in the French Alps.

The Duke and Duchess of Cambridge with their children, Prince George and Princess Charlotte, during a short private break skiing in the French Alps.

Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Norfolk in April, as the young Princess will celebrate her first birthday on Monday May 2.

Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Norfolk in April, as the young Princess will celebrate her first birthday on Monday May 2.

Undated handout photo released by the Duke and Duchess of Cambridge of Princess Charlotte taken by the Duchess at Anmer Hall in Norfolk in April, as the young Princess will celebrate her first birthday on Monday May 2.