Ariana Grande is on her "Dangerous Woman Tour," and one stop this week had her in Philadelphia at the Wells Fargo Center.
During her show, while she was singing, a fan crashed the stage! You can see the unwanted guest walking on stage behind Grande. He then walks to the side of the stage where she notices him. Good for her for not even getting phased. She even says, "be gentle." But it is unclear if she is talking to the trespasser or security.