See how Prince Harry, Meghan Markle photos compare with past royal engagement photos

Look back at royal engagement photos of the past.

The couple released three photos taken earlier this week by photographer Alexi Lubomirski.

Harry and Markle followed royal precedent by releasing a more formal shot and a more casual shot.

In one photo, Markle is seen with her hand on Harry's knee while dressed in a Ralph and Russo dress.

In another photo, she is casually embracing Harry's face and chose a Victoria Beckham sweater, with Harry in a Burberry coat.

The couple also shared a photo that shows Markle's arm looped in Harry's arm, another traditional royal pose.

Harry and Markle were photographed outdoors, at Frogmore House in Windsor. They plan to wed next May at St. George's Chapel at Windsor Castle.

Testino photographed William and Kate for their engagement photos in 2010.

To see Markle's and Harry's engagement photos through the lens of history, take a look back at the photos of other royal couples through the years.

Prince William and Princess Kate

William and Kate were photographed by Mario Testino in 2010 the Cornwall Room at St. James's Palace in London.

The couple's more casual shot has the same framing, with Kate close to William's face, that is seen in the casual shot of Harry and Markle.

Harry's grandparents were also photographed at Buckingham Palace after the announcement of their engagement in 1947.