Give it up for 21-year-old Ariana Grande. When a guy tried to joke about her breast size on Instagram, she OWNED him.

When a guy with the Twitter handle "jacksonruzzene" referenced Ariana's breast size and said that his 9-year-old sister has larger breasts, the singer came back with one of the best lines ever.

Ariana asked why he is looking at his sister's breasts. Yes, this troll just got owned and now the world knows about it. Here is the exchange between the two. Ouch.


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