The Queen's met lots of foreign leaders at this point in her life, she has been on the throne for 65 years.
But this weekend may have been one of her more memorable meetings with a foreign leader when she met with U.S. president Donald Trump.
And he broke a whole bunch of royal etiquette rules.
6. Disappearing Grandchildren
It's said that The Queen's grandchildren, Prince Harry and Prince William, each asked to be excluded so they would not have to meet Trump.
5. Arrived late
Donald Trump was doing things wrong before he even showed up for his meeting with the Queen. He kept the 92-years-old monarch waiting outside for about 15 minutes.
It got so bad that the Queen was actually spotted checking her watch.
4. Failed to Bow
When he finally showed up, he failed to bow to the Queen. Thankfully she didn't seem to mind and was seen smiling at Trump and his wife Melania while shaking their hands.
3. Forced Queen To Go Around Him
Tradition is not the only thing #Trump breaks!— Eva Zheng 郑怡斌 عائشة (@evazhengll) July 14, 2018
The Independent "Trump immediately breaches royal protocol twice after meeting Queen - first fails to bow then walks in front of monarch, breaking with tradition"#TrumpUKVisit pic.twitter.com/ew0ikCDZgq
Just a few minutes later, Trump did manage to upset the Queen when the pair set out to review some troops lined up.
Trump got a head start on Queen then stopped abruptly, forcing the monarch to shuffle around him.
2. Walked in front of the Queen
When he and the Queen did finally get lined up side by side he then started walking faster than her leaving her behind him.
Royal tradition says that it is rude to turn your back on the monarch and walk in front of them.
Finally, Trump revealed that he and the Queen had talked about Britain leaving the European Union, otherwise known as Brexit, something you aren't supposed to do.
He revealed that the Queen told him that it's a "complex issue."
When asked for more details on the conversation Trump realized he'd made a mistake though saying "Well, I can’t talk, you know I’ve heard very strongly from a lot of people, you just don’t talk about that conversation with the Queen, right?"
We're sure the Queen is probably happy his visit is over.