The three royals were in attendance alongside Princes William and Harry for the procession of the Queen's coffin.
Her body was transported from Scotland this week after she passed away at her home in Balmoral Castle last Thursday (8 September).
Today (14 September), she was taken from Buckingham Palace to Westminster where she will lie in state for four days.
Footage of Camilla, Kate and Meghan looking teary-eyed during today's service has since been shared by Royal Central on Twitter.
Alongside the footage, it reads: "Queen Camilla, the Princess of Wales and the Countess of Wessex are moved to tears as they watch the late Queen lie in state."
A number of commenters noticed how the caption didn't mention Meghan, who stepped down from her royal duties alongside her husband Harry in 2020 due to the media scrutiny they faced.
Meghan has been open about the racism she faced from the British public, and allegedly while in the Royal Palace too.
During her 2021 interview with Oprah Winfrey, the former actor claimed that someone from the royal family had even expressed concern about how dark her son Archie's skin would be, given that Meghan is bi-racial.
She also revealed that her in-laws treated her son differently, prompting her to leave the UK and relocate to Montecito, Santa Barbara.
"In those months when I was pregnant, all around the same time... so we have in tandem the conversation of, 'He won't be given security, He's not going to be given a title,'" she said.
In the same interview, although Prince Harry admitted he was ‘shocked’ by the comments, he told Oprah would never publicly reveal which family member said them.
This week, Oprah spoke about her hopes of Prince Harry and the Duchess of Sussex making peace with the royal family at the Queen’s funeral.
While discussing her upcoming documentary Sidney at the Toronto Film Festival, the TV host said: "Well, this is what I think, I think in all families - you know, my father passed recently, this summer, and when all families come together for a common ceremony, the ritual of, you know, burying your dead, there's an opportunity for peace-making.
"And hopefully, there will be that."
Royal fans got a glimpse of a reconciliation between the so-called fab four on Saturday (10 September) when the Prince and Princess of Wales and the Duke and Duchess of Sussex appeared together to greet mourners outside Windsor Castle.
Queen Elizabeth II’s funeral will be held at Westminster Abbey on Monday, 19 September at 11am.