LONDON — Queen Elizabeth II has sent her first tweet – and she’s signed it “Elizabeth R.”

The 88-year-old monarch tried her hand at Twitter as she opened a new gallery in central London’s Science Museum Friday.

The queen removed a glove to type on a touchscreen tablet, writing “I hope people will enjoy visiting” the exhibition. She sent it through the official British monarchy account on the social media website, as some 600 guests looked on.

“Elizabeth R” is how the queen signs official documents. The “R” stands for “regina”, the Latin for queen.