The pregnant duchess wowed in a print midi dress by one of her go-to British designers, Victoria Beckham.
Amy is reported to be staying on until the birth of baby Sussex before moving overseas, when she will become the fourth person to leave Meghan and Harry's employment since their May wedding.
During the service, both Meghan and Kate were seen saying hello, or hola, to different guests and conversing with them, but eventually the two made their way to each other.
The Duke and Duchess of Sussex marked Commonwealth Day on Monday by taking a trip to Canada House in London - and as you can see in our awesome video above, Meghan has mastered one vital part of becoming a true Brit: the ability to talk about the weather!
It's Meghan's first attendance as a member of the Royal Family.
As for the rumors going around that Meghan and Kate can not stand each other, they started at the end of previous year and were sparked by the news that Meghan and Harry were moving away from Kensington Palace to raise their baby by themselves.
The Duke and Duchess of Sussex during a visit to Canada House
Kate and Meghan looked stunning in red and white, respectively, and as classy as ever!
Meghan Markle has been speaking out and standing up for women's rights from a young age, but the Duchess of Sussex still feels like her work has just begun.
Meghan wore Erdem for a visit to Canada House.
Canada is a special place for Meghan, who was living in Toronto to film Suits before moving to England to be with Harry. The soon-to-be mum kept her look simple, yet elegant with a pair of black heels and a black clutch.
While many guests opted for smart dresses and coats, the cellist, 33, was pictured in a daring red ruffled gown as she arrived outside Westminster Abbey. Commonwealth Day is the annual celebration of the Commonwealth of Nations, including countries in Africa, Asia, the Caribbean and Americas, the Pacific and Europe, and is often held on the second Monday in March.
Martellus Bennett interested in joining brother in New England
New England's inability to block Bennett was proven in the game itself, and Bennett showed his versatility to a ridiculous degree. Naturally, people were quick to point to the Bennett trade and say that this spells the end of Trey Flowers The Patriot.
North Korea Blames U.S. for Hanoi Summit Ending Without a Deal
But the meeting broke down over an impasse regarding how many sites North Korea would shut down. President Donald Trump and North Korean leader Kim Jong Un in Hanoi.
Syrian army attacks Islamic State targets in desert
The Kurdish-led forces launched their broad offensive on remaining IS strongholds in the Euphrates Valley six months ago. The Kurdish-led force pushed into Baghouz on Saturday.