Prince William through the years: PHOTOS

Prince William was introduced to the world hours after his birth on June 22, 1982, on the steps of St. Mary's Hospital. (David Levenson/Getty Images)

Prince William posed on his mother's lap, surrounded by The Queen, Queen Mother, Prince Phillip and his father, now-King Charles, at his christening in August 1982. (Fox Photos/Getty Images)

Princess Diana cradling Prince William in December 1982. (PA Images via Getty Images)

Princess Diana posed with Charles and William in February 1983, when their son was 6 months old. (Tim Graham Photo Library via Getty Images)

Prince William sticks his tongue out as he and his parents posed for pictures in New Zealand in April 1983. (David Levenson/Getty Images)

Prince William roaming the grounds of Kensington Palace in December 1983. (Anwar Hussein/Getty Images)

A pregnant Princess Diana looks on as Charles pushes William on a swing in 1984. (PA Images via Getty Images)

Prince William posed for photos in blue overalls, in honor of his second birthday in June 1984. (Anwar Hussein/Getty Images)

Prince William made his debut at the Trooping of Colour in June 1984, at 2 years old. (Anwar Hussein/WireImage)

Prince William was joined by his brother, Prince Harry, in September 1984. He's photographed with him and other royals at Harry's baptism in December 1984. (PA Images via Getty Images)

Prince William had some fun with his brother and dad during a photoshoot in October 1985. (Tim Graham Photo Library via Getty Images)

Princess Diana sits with her two boys in front of the piano in their Kensington Palace home. (Tim Graham Photo Library via Getty Images)

Prince William began his royal duties at a young age, as he greeted a Commander of the Parachute Regiment in 1985. (Tim Graham Photo Library via Getty Images)

Prince William helped his baby brother as he took his first steps in 1985. (Tim Graham Photo Library via Getty Images)

William posed for a family photo with Harry, Diana and Charles in 1986. (Tim Graham Photo Library via Getty Images)

William looks into the camera and salutes while in an army uniform in 1986. (Tim Graham Photo Library via Getty Images)

Prince William and Princess Diana go for a ride on a pony at Highgrove in 1986. (Tim Graham Photo Library via Getty Images)

William channeled his inner officer when he visited the Windsor police department in 1987. (Anwar Hussein/Getty Images)

Queen Elizabeth spent some quality time with her grandkids in 1987, while watching a match in The Royal Box at Guards Polo Club. (Tim Graham Photo Library via Getty Images)

Prince William and Princess Diana cuddled while watching a polo match. (Julian Parker/UK Press via Getty Images)

Prince William had his first day of school in January 1987. (Daily Mirror/Mirrorpix/Getty Images)

The royal family posed on their bikes while on a family trip to Tresco, Italy, in 1989. (PA Images via Getty Images)

Prince Harry looked up to Prince William, on his first day at Whetherby School, in 1989. (Julian Parker/UK Press via Getty Images)

Prince William practiced riding near Sandringham Estate in January 1990. (Julian Parker/UK Press via Getty Images)

Prince William looking up to his father while at a polo match in 1990. (Tim Graham Photo Library via Getty Images)

Prince William enjoyed a bike ride with his dad and brother at Sandringham Estate in 1989. (Julian Parker/UK Press via Getty Images)

Princess Diana took Harry and William on a ski vacation in Switzerland in 1991. (Kent Gavin/Mirrorpix/Getty Images)

Prince William and Prince Harry waved to fans as they paid a visit to Queen Elizabeth's Royal Yacht Britannia while in Canada in 1991. (Kent Gavin/Mirrorpix/Getty Images)

Prince William took a visit to Niagara Falls in October 1991 with his mom, Princess Diana, and his brother, Prince Harry. (Jayne Fincher/Princess Diana Archive/Getty Images)

Prince William began taking his duties as the future king seriously at a young age. Here he is shaking hands with the public in 1991 at 9 years old. (Anwar Hussein/Getty Images)

Prince William at the British Formula 1 Grand Prix in London in 1992. (Mathieu Polak/Sygma/Sygma via Getty Images)

Prince William and Princess Diana leave church after Easter service in 1992. (Martin Keene - PA Images/PA Images via Getty Images)

Prince William enjoyed a day at a theme park with his mom and brother in April 1992. (Bob Collier/Sygma/Sygma via Getty Images)

Prince William took a ride in a sleigh while on vacation in Austria in March 1993 with Princess Diana and Prince Harry. (Jayne Fincher/Princess Diana Archive/Getty Images)

The royal family celebrate V-J Day in London in August 1994. (Terry Fincher/Getty Images)

Prince William shared a smile with his great-grandmother, the Queen Mother, at her 94th birthday in August 1994. (Anwar Hussein/Getty Images)

Prince William and Prince Charles spent some quality time together while on a ski vacation in 1994. (Tim Graham Photo Library via Getty Images)

Prince William poses with his family on his first day at Eton School in September 1995. (Tom Wargacki/WireImage)

Prince William at the Queen Mother's 95th birthday celebration in 1995. (Tim Graham Photo Library via Getty Images)

Prince William at the Eton Tea Party in Windsor in 1996. (Antony Jones/UK Press via Getty Images)

Prince William poses with the royal family at his confirmation in March 1997. (Tim Graham Picture Library/Getty Images)

Prince William with his father and brother in Balmoral in 1997. (Julian Parker/UK Press via Getty Images)

Prince William at Kensington Palace in 1997. (Tim Graham Photo Library via Getty Images)

Prince William walking outside of church following Christmas Day service in December 1998. (UK Press via Getty Images)

Prince William standing outside Highgrove in 1999. (Tim Graham Photo Library via Getty Images)

Prince William dressed as a Union Jack in 2000, his last year at Eton School. (Anwar Hussein/WireImage)

Prince William posing with his father in 2000. (UK Press)

Following his high school graduation in 2000, Prince William took a gap year, volunteering with the Raleigh International expedition. (Toby Melville/AFP via Getty Images)

Prince William at the Queen Mother's 101st birthday in August 2001. (UK Press/Getty Images)

Prince William playing polo in July 2001. (Anthony Harvey/Getty Images)

Prince William arrives at St. Andrews University in 2001, accompanied by his dad. (David Cheskin - PA Images/PA Images via Getty Images)

Prince William with his father on a ski vacation in 2002. (Julian Parker/UK Press via Getty Images)

Prince William stood solemnly at the funeral of the Queen Mother in June 2002. (Anthony Harvey/Getty Images)

Queen Elizabeth posed with her future successors to celebrate the 50th anniversary of her coronation in 2003. (Anwar Hussein/Getty Images)

Prince William celebrated his 21st birthday in June 2003. (David Cheskin - Pool/Getty Images)

Prince William played water polo for his university, making his debut in 2004. (ROTA/Getty Images)

Prince William graduated from St. Andrews University in 2005. (Bruno Vincent/Getty Images)

Prince William posing with his brother, father and step-mom on his dad's wedding day in 2005. (Anwar Hussein Collection/ROTA/WireImage)

Prince William takes part in the Sovereigns Parade in 2006. (Simon James/WireImage)

Prince William trains with the Royal Air Force in 2008. (Pool/Tim Graham Picture Library/Getty Images)

Prince William receives his wings from his father after graduating as a RAF pilot in 2008. (Michael Dunlea/Pool/AFP via Getty Images)

Kate Middleton was there to support Prince William at his graduation from the RAF. (Anwar Hussein/Getty Images)

Prince William and Prince Harry posed for photos while at a military helicopter training course. (Anwar Hussein/WireImage)

Kate Middleton and Prince William announced their engagement in November 2010. (Chris Jackson/Getty Images)

Prince William and Kate Middleton got married in April 2011 at Westminster Abbey. (Chris Jackson/Getty Images)

Prince William and Kate Middleton celebrating at the 2012 London Olympics. (Pascal Le Segretain/Getty Images)

William and Kate became parents in July 2013 when Prince George was born. (Chris Jackson/Getty Images)

The couple traveled as a family of three for the first time in 2014, when they took Prince George to Australia. (Chris Jackson/Getty Images)

Prince William showing off his soccer skills in 2015. (Max Mumby/Indigo/Getty Images)

Prince William and Kate Middleton welcomed their daughter, Princess Charlotte, in May 2015. (Zak Hussein/Corbis via Getty Images)

Prince William in military uniform in 2015. (Max Mumby/Indigo/Getty Images)

Prince William and Kate Middleton travel in Canada as a family of four in 2016. (Dominic Lipinski-Pool/Getty Images)

Prince William jokes around with Kate Middleton while at the Virgin Money London Marathon in 2017. (Mark Cuthbert/UK Press via Getty Images)

William and Kate welcomed their third child, Prince Louis, in April 2018. (Chris Jackson/Getty Images)

Prince William at the Trooping the Colour in July 2018. (Anwar Hussein/WireImage)

Kate and William walk their kids to school in September 2022. (Jonathan Brady - Pool/Getty Images)

Prince William stands behind his father, King Charles III, at Queen Elizabeth's funeral, in September 2022. (Max Mumby/Indigo/Getty Images)

William and Kate travel to Boston for the Earthshot Prize Awards in December 2022. (Mike Coppola/Getty Images)

The Prince and Princess of Wales at the coronation of King Charles III in May 2023. (Max Mumby/Indigo/Getty Images)

Prince William and Kate Middleton join the rest of the royals at the 2024 Trooping the Colour ceremony. It was the Princess of Wales' first public appearance since the announcement of her cancer diagnosis. (Chris Jackson/Getty Images)

Prince William turns 42 on June 21, 2024. (Chris Jackson/Getty Images)