Last year, the duke of Edinburgh recently beat his grandson in GQ's 50 Best Dressed Men in Britain list [1] (the older royal came in at number 12, while Harry lagged behind at 38), so we thought it was the perfect opportunity to take a look at some sweet snaps of the pair throughout the years. From signs of affection to sharing a joke and doing their duty at joint engagements to quiet looks of pride, this is a dapper double act that we can't get enough of.
At the Eton Boys Tea Party in Windsor in June 1999, a 14-year-old Harry looked proudly at his grandfather.
At the wedding of family friend Edward Van Cutsem in November 2004, the smiles on Harry's and Philip's faces were the widest as they shared a joke.
We'd love to know what Prince Philip was saying to make Harry laugh like this at Trooping the Colour in 2006.
Not many would get away with totally ignoring the queen to have their own moment — at Trooping the Colour in 2009.
Church bound on Christmas Day 2010, Harry and his grandpa led the royal pack.
Back in 2012, Harry and Prince Philip hung out together on the royal barge before the Diamond Jubilee River Pageant began.
At the 2012 Trooping the Colour, it was Harry's turn to amuse his grandfather.
Harry and Philip undertook their first official engagement together — at Westminster Abbey's Field of Remembrance — in November 2013.
After undertaking a Walking With the Wounded expedition to the South Pole, Harry introduced the participants to his grandparents at a Buckingham Palace reception in November 2013.
The grins spoke for themselves at a pageant to mark the Ghurka's 200th anniversary in June 2015.
The easy chemistry of our favorite double act was on display again at the 2014 Trooping the Colour.
Once again Prince Philip was on hand for a personal tour of Harry's Sentebale garden at the 2015 RHS Chelsea Flower Show.
Trooping the Colour 2015? Time for another sweet snap of the two.
The pair shared a joke at a Buckingham Palace reception to mark the Rugby World Cup in October 2015.
And they paired up again for the Rugby World Cup Final the following month.
In what has become a new tradition, the grandfather and grandson teamed up again at Westminster Abbey's Field of Remembrance in November 2015.