In a visit to the Science Museum in London today, the Queen of England sent her very first tweet.
The monarch has had a verified Twitter account for some time now, but this is the first tweet that she sent herself. It was sent to mark the opening of the Science Museum's new "Information Age" exhibit about technology and the internet.
The Queen didn't actually type the tweet herself, though. Instead it was prepared for her on an iPad at the Science Museum, and she tapped "Send" to post it to Twitter.
Here's a photo of the man who actually typed the tweet and prepared the iPad for the Queen.
Baroness Lane-Fox of Soho also posted a behind-the-scenes photo on Instagram showing the Queen about to press "Send" on her royal tweet.
Queen Elizabeth II was previously the first monarch in the world to send an email, sending one during a visit to an army base in 1976.