How would you feel if you were just causally riding the subway one day and you look up to see your favorite celeb sitting right across from you? That’s exactly how the passengers felt when they saw Rihanna on the subway with them. The singer decided to take the tube to one of her “LOUD” concerts at London’s O2 Arena last month and she said:

“I’m going to the show with the audience and they have no idea,” said an excited RiRi. “By the way, I’ve always wanted to do this.”

Check out the reactions as surprised passengers notice: