Adorably, Prince Harry also gave Meghan a helping hand when it came to the all-important curtsey in front of the Queen. He will celebrate his 97th birthday Sunday. The "Quantico" actress wore a pastel shade of purple with a matching hat by Philip Treacy, while Spencer opted for a navy blue, collared dress with polka dots and a matching hat.
A spokesperson for the family said they will also attend a lunch held at Chester Town Hall alongside local leaders and dignitaries.
With the streets lined with crowds waving flags, the parade moves from Buckingham Palace and down the Mall to Horse Guard's Parade, alongside members of the royal family on horseback and in carriages.
The ceremony culminates with a magnificent balcony appearance by the Royal Family.
The parade marks the official birthday of the Sovereign, even though the Queen's actual birthday is on April 21st.
Instagram princesseugenieShe shared the snap ahead of Father's Day this weekend reportedly very close to her father
There was no sign of six-week-old Prince Louis.
They're due to travel to Chester in Cheshire aboard the Queen's private train on Thursday and apparently, this is a pretty big deal.
The Mirror reported that the three-year-old princess burst into tears after dropping a booklet she had been reading to follow the celebrations as the RAF jets approached the Palace.
The Duke and Duchess' reported getaway has not been identified for privacy reasons.
All four countries on the tour are members of the Commonwealth, the 53-nation grouping for which Harry is a youth ambassador. Meghan and Harry have stated their desire to jump right in and get to work in their new roles. During his time in the public eye, he completed more than 22,000 solo public engagements.
While Harry appeared at a gala dinner yesterday, it's the first time Meghan has been seen since the pair's honeymoon.More news: The 'trend' that is troubling the US