#SelfieOfLife: Lady Shares Photo Of Her In An Oxygen Mask In The Hospital

Lady Gaga received medical care after suffering from altitude sickness following her gig in Denver, Colorado, last night, as part of her ArtRave: The Artpop Ball tour. The 28-year-old singer shared a photo of herself with an oxygen mask strapped over her mouth and nose on Instagram with the caption: 'Altitude Sickness is no Joke! #hitThatHospitalS**t #artRaveDenver many true ravers crowd tonight.'