The state of someone acknowledged as a megastar.(noun)
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Use "megastardom" in a sentence
"Both, understandably, focus on the site’s power to launch new bands to megastardom, which is sexy and relatively visible, rather than its impressive ability to mortally wound even a well established group."
"So his recent play, namely his three-point shooting, has been a pleasant surprise for Knicks fans—and it probably would be worthy of even more buzz if not for the intergalactic megastardom of one Jeremy Lin."
"Until the reviews come in, it will not be known if Malick's film will shed much light on the meaning of life, but its leading men appear to have already unlocked something almost as important: the secret path to Hollywood megastardom."