Dappy branded an N-Dubz fan a "fat, ugly pig" after she said she liked his new music.
The rapper - real name Costadinos Contostavlos - was left furious when mum-of-one Jade Easthope described his new single Splash as a "guilty pleasure".
Jade, 26, tweeted the pop star's post about his new song Splash, saying: "#Guiltypleasure #Nananiiiii."
But she was stunned when the No Regrets hitmaker, 32, launched into an expletive-filled rant at her after sliding into her DMs.
He blasted: "Unfollow me now please. I don’t want you following me."
Jade asked him why but he told her: "If not I will block you."
Taken aback, Jade said: "Is that how you speak to your fans? Your first ever tour I went and supported you.
"All your singles I have bought - still listen to you now."
Dappy - who is former bandmate and X Factor judge Tulisa's cousin - sent her a photo of her original tweet, and said enraged: "Did you post this??? Well????? Welllllll??????????"
Jade explained that she had said the singer was a guilty pleasure, as he was "old school", but this just provoked Dappy and he blasted: "See now f**k off you fat ugly pig."
He continued: "Don’'t ever listen to my music again you tramp."
Jade was left aghast and asked: "Is this even Dappy man? How can someone speak to anyone like that? How old are you?"
Dappy raged: "Blocking your fat ass now. Bye. You hate me and I hate you. You don't like my music.
"Stop taunting me by saying guilty pleasure."
Jade had no idea why her hero was so angry, asking him: "I adore your music, why am I taunting you? What's wrong with guilty pleasure?"
But that just provoked a furious Dappy even more.
He fumed: "Forget about me, stop mentioning me, shut the f**k up. My music hates you, you ugly, fat s**t.
“Listen, f**k you and your guilty pleasure b******t. Fat b***h blocked."
Jade, of Doncaster, South Yorks, added: "I'm 26 with a little boy, so it isn't the kind of music I would play in front of him.
"It's more one I would listen to with headphones in, which was why I said it was a guilty pleasure."
Jade's post, which provoked Dappy’s vile outburst, was just the fourth tweet she had ever made.
"I was pretty taken aback by what he said - given he went from zero to a thousand within seconds.
"I'm quite thick-skinned, but if it was someone who is easily offended then you don't know what might have happened.
"They could have taken a drastic turn based on what he said.
"I'm never listening to Dappy or N-Dubz again."
Last month Dappy called 21-year-old Ellana Prior a "little b***h" on Instagram, when she also innocently described his new song as a 'guilty pleasure.'
It prompted dozens of people to spam the singer with guilty pleasure posts.
Mirror Online has contacted Dappy for comment.
