Lady Gaga had a tough time in the Mile-High City!
The 28-year-old singer was hospitalized for altitude sickness Wednesday night after her concert at Denver's Pepsi Center. She Instagrammed a selfie from the hospital showing her in full makeup, fake lashes and...an oxygen mask! "Altitude Sickness is no Joke!" she wrote. "#hitThatHospiitalS--t #artRaveDenver many true ravers crowd tonight."
Poor thing! Mother Monster isn't the first star to suffer from altitude sickness. In February 2013, Carrie Underwood required some oxygen mid-performance in Broomfield, Colo. She Instagrammed a selfie while wearing her mask, explaining, "In high altitudes, they put oxygen in my dressing room under the stage! This is me before the encore..."