Hilton had advised Ronson to remove rapper Wale from the track 'Change' on the US release of Daniel Merriweather's debut album.
Ronson said: "Um, could you get rid of my Twitter address instead please? Cheers."
Hilton replied: "That wasn't meant as a bitchy remark. I truly think the song would b better without Wale. Just looking out 4 Merriweather."
Ronson said: "Pardon me but you have made a career out of picking on teenagers, lesbians, etc. Congrats, you can now add rappers to that list."
Hilton responded: "Correct. And that's also given me a platform to talk about a lot of amazing musicians and expose them to millions of people.
"It's cool, boo. I unfollowed you. And I'll make sure to never mention Daniel Merriweather again on my site. Because not only am I fat, ugly, unfunny, stupid and a c**t, but I'm also petty.
"I will try and keep abreast out of who your other artists are too, so I never mention them as well! P.S. You're an overrated hack! (We have a lot in common!)."
Hilton later told Merriweather that the singer does not need his support because he is "very talented" but urged him to release 'Water And A Flame' as his first US single if he does not remove Wale from the other track.