Celebrity Families

Oh, brother! Prince William and Prince Harry's best brotherly moments

They're more than brothers, they're best friends!

Prince Harry has asked his brother Prince William to the best man at his wedding to Meghan Markle. And while it may be royal protocol for William to stand by his brother's side, as Harry did for him on his wedding day, the Duke Of Cambridge couldn't be more thrilled to support his little brother.

"The Duke of Cambridge is honored to have been asked, and is very much looking forward to supporting his brother at St. George's Chapel, Windsor on May 19th," Kensington Palace wrote in a tweet announcing that Harry had asked his brother to be his best man.

From a young age the princes have been inseparable. Prince Harry was just 12 years old when his mother Diana, Princess of Wales, died, while William was 15. The tragedy deeply affected both boys, but they always had each other.

William and Harry are more than brothers, they're best mates and we've loved seeing their relationship grow, as have they, in front of the public.

Before Harry follows in his older brother's footsteps and becomes a husband, and hopefully a father, we take a look back at the princes' most adorable moments.

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Scroll through to royally enjoy the brotherly love!

The early years

William and Harry looking up to mischief in matching camouflage outfits at Kensington Palace in 1986.
The brothers cuddle up to their mother Princess Diana on holidays in Spain in 1987.
Harry looks adoringly at his older brother on his first day of school in 1989.
Prince William watches over Harry at the youngest's princes first official event in London in 1989.
Looking to get a laugh out of his big brother, Harry stares up at William at a VJ Day celebration in 1995.

Growing into lovely young men

The brothers chat at Highgrove in 1999.
The princes chuckle at the Queen Mother's 101st birthday celebrations in 2001.
William and Harry cackle with laughter at an official event in 2002.
Harry turns out to support his brother at the finish line of a charity race in 2004.
The princes at the Concert for Diana in London in 2007.
The princes have a laugh with US rappers Kanye West and P Diddy backstage at the six-hour long extravaganza in memory of their late mother, 2007.
William and Harry looking dapper in the rain in London in 2007.
Crikey! The princes mess around with a snake during their visit to Africa in 2010.

Becoming husbands and fathers

Cheeky Harry stood by his nervous brother on his big day when he married Kate Middleton on April 29, 2011.
Prince William, Duchess Kate and Prince Harry attend the Men's team sprint track cycling event of London 2012 Olympic games.
The face says it all! Prince William cheers at the during the Rugby World Cup, 2015.
They're competitive! Harry and William play 5 a side football during a visit to the Coach Core project at Gorbals Leisure Centre in Scotland in 2014.
The princes duel with light sabres during a tour of the Star Wars, 2016.
Tee brothers are greeted by droid BB-8 as they arrive for the European Premiere of Star Wars: The Last Jedi in London, 2017.
The Duchess of Cambridge, Prince William and Prince Harry take part in a relay race, during a training event to promote the charity Heads Together, at the Queen Elizabeth Olympic Park in London, 2017.
A knowing look. William and Harry at the opening of the Greenhouse Sports Centre in central London, 2018.