Prince William and Kate Middleton appear with Prince George, outside the Lindo Wing of St Mary's Hospital, in central London July 23, 2013.
Prince William will celebrate his first Father's Day on 15 June.
The holiday falls just over a month before Prince George turns one on 22 July.
According to E! News, the 31-year-old royal and his brother, Prince Harry, will be playing polo as part of the day.
"[William] will be playing in a polo match to raise money for some of his charities," a palace source told the website.
This is "one of a number of matches [William] and his brother [Prince Harry] play in over the summer to raise money and awareness for good causes," the insider added.
As William prepares to make his first Father's Day a memorable occasion, scroll down to take a look at some of the most adorable photos of Prince William and Prince George below.
Prince George in his first family photograph with his parents, Kate Middleton and Prince William. (Photo: Clarence House)
Prince William carries Prince George as they arrive for his son's christening at St James's Palace in London October 23, 2013.
Kate Middleton and Prince William with their son Prince George. This image is one of the four official photographs of Prince George on his Christening day. (Credit: Jason Bell/CAMERA PRESS)
The Royal family posed by a window at Kensington Palace for the informal photo.Jason Bell
Prince William carries his son Prince George next to officials as he arrives with his wife Catherine, the Duchess of Cambridge, at Sydney Airport April 16, 2014.
Prince William and Prince George during a visit to Sydney's Taronga Zoo April 20, 2014.Reuters
Catherine, Duchess of Cambridge, and her husband Prince William watch as their son Prince George looks at an Australian animal called a Bilby, which has been named after the young prince, during a visit to Sydney's Taronga Zoo April 20, 2014.
