The photographer for Prince Harry and Meghan Markle’s wedding has shared the serious warning given by palace officials to guests before their royal wedding seven years back.

Alexi Lubomirski, chosen to photograph the Duke and Duchess of Sussex’s engagement in 2017, was invited to capture their wedding pictures the next year.

On TikTok, the royal photographer offered a glimpse into what it was like to photograph the wedding at Windsor Castle, also discussing the stringent instructions provided by palace staff before the event.

“Ladies and gentlemen, please be careful what you are saying to each other because the world can lip read,” guards stationed outside of the castle told wedding guests upon arrival, Lubomirski said.

“As you walk in, you see a lot of people sort of talking like this,” the British photographer said in the video, partially obscuring his mouth with his hand.

“You don’t know what you’re talking about, but everyone on these cameras is watching and lip-reading.”

On the big day, Lubomirski snapped photographs of Harry and the “Suits” alum, their families, and the wedding guests.

Detailing the daunting job, he said that he approached the Invictus Games founder for tips on how best to photograph his family.

In response, he was told to be quick when taking photos of the late Queen Elizabeth II and her husband, Prince Philip.

“[He said], ‘You know, they’re very old, they’ve taken so many pictures in their life. If you don’t get it quickly, they’re going to just move out,’” Lubomirski recalled. 

Lubomirski took a little bit longer than usual when setting up his equipment, and apologized to the late queen profusely for the delay.

“It’s not me you need to worry about,” the beloved former monarch told him, pointing to her husband.

When it came to getting the perfect shot of the royal children, Lubomirski’s secret weapon was candy.

After getting the perfect group photo, the photographer recalled having the Sussexes pose for him in an intimate setting away from the guests and family members.

“There was this sense of relief and beauty and joy, and they just slumped on the stairs and I got this picture,” he said, referring to the famous black-and-white image of the royal couple.

Audrey Hepburn and Mel Ferrer’s famous photo served as inspiration for the snapshot.

“There was this moment of laughter between them, and it was so beautiful,” he said in another TikTok video. “I was so excited to get that picture.”

The Sussexes famously exchanged vows at St George’s Chapel in Windsor Castle on May 19, 2018.

Less than two years later, they quit as working members of the royal family and moved to Montecito, Calif.

On Monday, the pair celebrated their seventh wedding anniversary, with the As Ever founder sharing a series of never-before-seen snaps to mark the occasion.