POOL
Now playing
01:35
Why the world is so obsessed with the new royal baby
Iran's new President-elect Ebrahim Raisi speaks during a press conference in Tehran, Iran, Monday, June 21, 2021. (AP Photo/Vahid Salemi)
Vahid Salemi/AP
Iran's new President-elect Ebrahim Raisi speaks during a press conference in Tehran, Iran, Monday, June 21, 2021. (AP Photo/Vahid Salemi)
Now playing
02:28
CNN asked Iran's President-Elect about nuclear deal. Hear his reply
Now playing
02:15
See where Olympians will eat, sleep and relax in Tokyo
TABRIZ, IRAN - JUNE 16: Iran presidential candidate Ebrahim Raeesi takes part in a campaign meeting with Residents of Tabriz on June 16, 2021 in Tabriz, Iran. The country's incumbent president, Hassan Rouhani, is ineligible to run again after serving two terms in office. (Photo by Meghdad Madadi ATPImages/Getty Images)
ATPImages/Getty Images Europe/Getty Images
TABRIZ, IRAN - JUNE 16: Iran presidential candidate Ebrahim Raeesi takes part in a campaign meeting with Residents of Tabriz on June 16, 2021 in Tabriz, Iran. The country's incumbent president, Hassan Rouhani, is ineligible to run again after serving two terms in office. (Photo by Meghdad Madadi ATPImages/Getty Images)
Now playing
02:20
Ultra-conservative candidate wins Iran's presidential election
nigeria kidnapping explainer africa Asher pkg oneworld intl ldn vpx_00021802.png
nigeria kidnapping explainer africa Asher pkg oneworld intl ldn vpx_00021802.png
Now playing
02:20
'The stuff of nightmares': Breaking down Nigeria's kidnapping epidemic
screengrab china shenzhou 12 launch
CCTV
screengrab china shenzhou 12 launch
Now playing
01:59
See Chinese rocket launch to send astronauts to its space station
Putin praises biden Geneva summit Robertson lkl intl hnk vpx_00010025.png
Putin praises biden Geneva summit Robertson lkl intl hnk vpx_00010025.png
Now playing
02:09
Hear Putin offer rare praise for President Biden
Iran presidential election Pleitgen pkg intl hnk vpx_00021422.png
Iran presidential election Pleitgen pkg intl hnk vpx_00021422.png
Now playing
02:22
Hear from Iranian voters as they head to polls in presidential election
Host TV
Now playing
07:15
'What are you so afraid of?': Journalist presses Putin on political opposition
Russian President Vladimir Putin faces questions from reporters after his meeting with US President Joe Biden in Geneva, Switzerland.
Host TV
Russian President Vladimir Putin faces questions from reporters after his meeting with US President Joe Biden in Geneva, Switzerland.
Now playing
04:44
Putin faces question about cyberattacks against the US
CNN's Christiane Amanpour provides analysis following a summit between President Joe Biden and Russian President Vladimir Putin.
CNN
CNN's Christiane Amanpour provides analysis following a summit between President Joe Biden and Russian President Vladimir Putin.
Now playing
01:59
Amanpour: Biden did something very different than Trump
President Joe Biden meets with Russian President Vladimir Putin, Wednesday, June 16, 2021, at the 'Villa la Grange', in Geneva, Switzerland.
Patrick Semansky/AP
President Joe Biden meets with Russian President Vladimir Putin, Wednesday, June 16, 2021, at the 'Villa la Grange', in Geneva, Switzerland.
Now playing
02:55
Ward describes 'uncomfortable' photo op between Biden and Putin
biden putin summit us russia press pools clash collins sot vpx_00012417.png
biden putin summit us russia press pools clash collins sot vpx_00012417.png
Now playing
01:40
Collins: 'Combative exchanges' between Russian and US press corps
Pool
Now playing
02:49
See Biden and Putin shake hands as summit begins in Geneva
GAZA CITY, GAZA - JUNE 15: Flames are seen after an Israeli air strike hit Hamas targets in Gaza City, Gaza on June 15, 2021. (Photo by Ali Jadallah/Anadolu Agency via Getty Images)
Ali Jadallah/Anadolu Agency/Getty Images
GAZA CITY, GAZA - JUNE 15: Flames are seen after an Israeli air strike hit Hamas targets in Gaza City, Gaza on June 15, 2021. (Photo by Ali Jadallah/Anadolu Agency via Getty Images)
Now playing
03:58
Israel launches airstrikes in Gaza over incendiary balloons
China successfully launched the first module of its planned space station from the Wenchang launch site in the southern island of Hainan, according to the China National Space Administration.
CCTV
China successfully launched the first module of its planned space station from the Wenchang launch site in the southern island of Hainan, according to the China National Space Administration.
Now playing
01:04
See China's last rocket launch to send in space key component of its space station
CNN —  

Meghan, Duchess of Sussex, was making her first appearance at a public engagement Saturday since the birth of her son, Archie Harrison Mountbatten-Windsor, at the traditional Trooping the Colour, a celebration of the Queen’s official birthday.

A royal source exclusively told CNN the duchess is expected to attend the traditional Trooping the Colour, a celebration of the Queen’s official birthday on Saturday.

Although the duchess is still on maternity leave, the royal source says this is a family moment, where many members of the royal family will be in attendance. Archie will not be among them.

According to the palace’s source, this is a separate affair from the duchess’ official duties of participating in a formal state visit.

Similarly, Catherine, the Duchess of Cambridge, also attended a previous Trooping the Colour during her maternity leave, but did not carry out any official duties.

The duchess and her husband, Prince Harry, welcomed baby Archie into the world last month.

The duchess shared a photo of baby Archie on the couple’s Instagram account on her first Mother’s Day last month.

Annual spectacle

More than 200 horses, 400 musicians and 1,400 officers, adored with their famous red jackets and black bearskin hats, will be taking part in the spectacular display on Saturday.

The monarch is technically the head of Britain’s armed forces, and would traditionally lead an army into war. The parade gives the Queen a chance to review and approve her army.

The Parade moves from Buckingham Palace and down the Mall to the House Guard’s Parade in Whitehall, with members of the Royal family traveling on horseback or carriage.

When the Queen was younger, she would ride side-saddle on horseback to greet the public. But in recent years, she travels by horse and open carriage.

The Queen inspects the troops at the Horse Guard’s Parade before riding back to Buckingham Palace at the head of her Guards. Once at the palace, the entire royal family will gather on the balcony to watch the colorful flypast by the Royal Air Force.

The event is also marked by a 41-gun salute in Green Park by the Horse Artillery.

The Queen’s real birthday is on April 21, but official celebrations always take place on June 10, and often for a whole weekend. The nation’s longest serving monarch turned 93 in April.

According to the Royal Family’s website, the Trooping of the Color has traditionally marked the official birthday of the British Sovereign for more than 260 years.

CNN’s Angela Dewan contributed to this report.