Lady Gaga has just been hospitalized because of altitude sickness. A picture Lady Gaga posted on her Instagram account quickly became viral, as it featured the "Poker Face" singer with an oxygen mask strapped to her face just on Wednesday. According to her post, she suffered from altitude sickness after she completed her concert in Denver.

The 28-year-old Lady Gaga posted on her Instagram, "Altitude Sickness is no joke! #hitThatHospitalS-t #artRaveDenver many true ravers crowd tonight."

This sickness is actually pretty common in Colorado. In fact, the official website of Denver has an entire section dedicated to teaching people on how to deal with the altitude. This means that Lady Gaga might not have fully understood tip No. 4, which said, "Watch your physical activity." Perhaps Lady Gaga still opted to go all out in her "artRAVE: The ARTPOP Ball" show, despite the warning.

Although Lady Gaga was hospitalized because of this condition, her next concert in Seattle will still be pushed through as originally scheduled. As planned, Lady Gaga's Seattle concert will take place on Friday.

Moreover, apart from her highly fashionable show, Lady Gaga is also presently getting a lot of attention for dressing up quite "normally." Perhaps the public was surprised to see the amazingly talented Lady Gaga wearing a highly elegant long, black dress, without the outlandish accessories. Although it may be true that a long black gown was far too fancy for daytime, it was a relatively normal look.

Maybe Lady Gaga was on a break from her usual crazy outfits when she was spotted in New York with the black gown. Additionally, not only did Lady Gaga dress like a normal person that day, but she also looked very lovely while doing it. Perhaps Lady Gaga should give similar dresses a chance and start to wear them more in public as she knows how to rock the "normal" look as well.