Kate Middleton makes first solo outing with Queen Elizabeth -- eight months after Meghan Markle!

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Kate's first outing with the Queen!

Kate Middleton and Queen Elizabeth stepped out for their first-ever joint outing on Tuesday when they attended the opening of Bush House at King's College London's Strand Campus.

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Duchess Kate donned a grey Catherine Walker coat dress, while the Queen opted for a light pink Stewart Parvin coat and matching hat. The pair arrived together in a car, sitting side-by-side and sharing a blue blanket to keep warm while driving to the university.

See photos from their outing below:

Twitter users jumped at the subtle move, calling it "the cutest thing ever."

Throughout the rest of the visit, Kate and Queen Elizabeth appeared to be at ease in one another's presence and kept things very professional while visiting the building's rooftop terrace to take in views of London. While leaving the new development, they were each given flowers.

This is the first time that Duchess Kate and Her Majesty have stepped out together since March 2012, but even then they were joined by the Queen's husband, Prince Philip, during a visit to Leicester. Considering Kate married Prince William back in 2011, she waited a whole eight years before being able to attend an official public engagement with the monarch on her own.

SEE ALSO: Queen Elizabeth instructs Meghan Markle on royal protocol during first joint outing

Meanwhile, Meghan Markle stepped out for a solo appearance with Queen Elizabeth eight months ago last June, less than a month after marrying Prince Harry in May 2018, during a visit to Chesire, where they were famously all smiles and shared numerous laughs together.

See photos from that outing below: