Trooping of the Colour is one of the most beloved royal events of all time.
Every year, eager fans celebrate Queen Elizabeth ii birthday.
The entire royal family comes out - this year we saw Prince Harry and new mum Meghan Markle.
And apparently, baby Archie Harrison was also there!
WATCH BELOW: Can you see the royal baby being held near the windows, watching the Queen's birthday below.
A source told Us Weekly that the parents had their son with them.
“Archie was at Trooping the Colour,” a source said.
“[It] was a chance for him to meet some of his cousins.”
That included the duke and duchess of Cambridge's (Prince William and Kate Middleton) kids Prince George, Princess Charlotte and of course Prince Louis.
The insider added, “The reason Harry and Meghan didn’t appear on the balcony when the Queen returned back to Buckingham Palace was because she was breast-feeding.”
“She has spent almost every moment with him and saying goodbye was very difficult,” they explained.
“But Meghan truly wanted to be at the celebration for the queen. … Meghan loved seeing all the other royal children and was doting on them.”
ITV and Us Weekly have reported that later this year, Prince Harry and wife Meghan Markle will jet off to Africa.
The new parents are expected to visit the countries of Angola, Malawi, and South Africa.
With their little son, the parents will continue Princess Diana's humanitarian work.
In October, Archie will be nearly 5 months old.
No word whether Meghan's mother Doria Ragland will join.
Prince George was just 9 months old when he came with mum Kate Middleton and dad Prince William for his first official royal tour of Australia and New Zealand.
WATCH BELOW: ONE OF GEORGE'S MOST ICONIC MOMENTS WAS HIS ADORABLE REACTION TO SEEING A BILBY FOR THE FIRST TIME.
Prince William's little brother is said to expand his charity Sentable when in Malawi.
Prince Henry of Wales founded the charity alongside his friend Prince Seeiso of Lesotho back in 2006.
Sentable supports young people affected by HIV and AIDS in Lesotho, Botswana and Malawi.