AP

AP

Ariana Grande is the new princess of pop, topping the charts with her addictive single “Problem,” impressing critics with her thick, gliding vocal range and maintaining an image that her young Nickelodeon fans can vibe with, signature ponytail and all.

The 21-year-old is having the best time of her life. But it’s also the worst.

Her grandfather, with whom she had a very close relationship, died last week.
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