Clips posted online show a backup performer accidentally striking Gaga with the set prop while removing it from center stage. Gaga, holding a mock machine gun, staggers and rubs her head before briefly leaving the stage.
She continued the show, part of a world tour. Gaga's makeup artist Tara Savelo wrote Monday on Twitter: “Gaga has a concussion but she is going to be okay . . . cant believe she finished the show.”
On Monday, Gaga tweeted a photo and a message to let fans know she was feeling better.
“Thank you so much for all the thoughtful messages. I feel a bit woozy but a little better everyday,” she wrote. “Very happy to be in beautiful Australia.”