Happy 34th Birthday, Prince William!
To celebrate the royal's special day, click through the gallery to see his best childhood pics with brother Prince Harry!
December 1986
Harry and William pose with their parents at the family's Kensington Palace home.
May 1985
The royal family was photographed visiting Venice, Italy in the mid-1980s.
October 1985
William, Harry, and Diana pose at Kensington Palace.
October 1985
A young William and his brother, Harry, pose with their father, Charles, at Kensington Palace.
July 1986
Diana, Charles, and their two boys pictured in Tetbury, England.
July 1986
William and Harry posed in front of Highgrove House in matching, mini army uniforms in summer 1986.
July 1986
The young boys were once spotted playing with their mother outside Highgrove House.
April 1987
William and Harry playing in Scotland in the late 1980s.
June 1987
The brothers were adorably photographed at Cirencester Park Polo Club in summer 1987.
June 1987
William and Harry posed with their grandmother, Queen Elizabeth, at a polo club in Windsor, England.
August 1987
Charles and Diana with their children in Spain in summer 1987.
June 1988
Harry stuck his tongue out at photographers while standing on the Buckingham Palace balcony in summer 1988.
June 1989
The brothers looked dapper at a royal event in London in June 1989.
September 1989
William and Harry were spotted sporting their school uniforms in fall 1989.
April 1990
The brothers vacationed with their mom in the British Virgin Islands in the early 1990s.
April 1991
William, Harry, and Diana went on a fun ski trip in Austria in spring 1991.
October 1991
In fall 1991, the duo stepped out wearing matching denim outfits.
October 1991
William, Harry, and their mother visited Niagara Falls in 1991.
April 1993
The trio visited the Thorpe Park amusement part in spring 1993.
March 1994
Diana and her boys bundled up in Austria in spring 1994.
August 1995
Charles, Diana, William, and Harry at a V.J. Day commemorations event in summer 1995.
September 1996
William and Harry looked handsome in matching suits in fall 1996.
August 1997
William, Harry, and Charles visiting Balmoral Castle in summer '97.
March 1998
Charles and his two sons were spotted skiing in Canada in 1998.
December 1998
The boys attending Christmas church in Sandringham in 1998.
June 1999
In summer 1999, William and Harry looked dapper at a royal family wedding.
July 1999
The brothers again wore matching blue outfits in summer '99.
April 2000
Charles posed with his boys in April 2000 during a ski trip in Switzerland.
July 2001
In summer 2001, William and Harry attended a UK polo match.
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