When Prince Charles Philip Arthur George was born in November 1948 to the then Princess Elizabeth and Prince Philip, he was destined to be King.
Though their relationship may not be the most emotionally close, it's safe to say that Charles has the utmost respect for his mother and has been preparing for virtually his entire life to be her heir ever since she ascended to the throne in 1952.
Speaking at her Diamond Jubilee in 2012, Prince Charles honoured his mother with a personal speech delivered to a cheering crowd.
"I was three when my grandfather George VI died and suddenly, unexpectedly, you and my father's lives were irrevocably changed when you were only 26," he said at the time.
"So as a nation this is our opportunity to thank you and my father for always being there for us. For inspiring us with your selfless duty and service and for making us proud to be British."
With the Prince of Wales stepping up more than ever and taking on more of his mother's royal duties, his relationship with the Queen appears to strengthen with each year.
Keep scrolling to see the Queen and Prince Charles' remarkable bond in pictures.
1 / 0
2 / 0
3 / 0
4 / 0
5 / 0
6 / 0
7 / 0
8 / 0
9 / 0
10 / 0
11 / 0
12 / 0
13 / 0
14 / 0
15 / 0
16 / 0
17 / 0
18 / 0
19 / 0
- Food & DrinksAre you dealing with a fussy eater? Expert Annabel Karmel has three top tips you won’t forget
Now To LoveYesterday 4:40pm
- Food & DrinksHow to navigate weeknight drinks when you've got work the next day
Australian Women's WeeklyYesterday 1:31pm