The "Born This Way" singer (real name: Stefani Germanotta) tweeted a photo of what appears to be a black eye and bruised left cheek. "Emerging from hours of sleep," she wrote Monday. "Still remiss if I should go outside, with this clonker I may be of questionable styling."
Gaga, 26, suffered a concussion Sunday after she was hit in the head with a pole during a performance in Auckland, New Zealand. A backup dancer accidentally knocked Gaga's head with the set prop while removing it from center stage. The star staggered backwards after getting hit, but managed to finish her show.