Rob Kardashian has denied he was referring to Rita Ora in a series of tweets which criticised an ex-girlfriend.

The reality TV star and younger brother of Kim was dating RIP singer Rita earlier this year.

The Keeping Up With The Kardashians star originally tweeted of an ex: "She cheated on me with nearly 20 dudes while we were together, I wonder how many she will sleep with now that we apart? But I mean 20?!!!"

Twitter followers presumed he was referring to Hot Right Now singer Rita.

But Rob later reportedly tweeted: "Just so we clear I never once mentioned Rita Ora in any of my tweets."

Rob, who competed on Dancing With The Stars, added: "Never mentioned any names. I speak truth. I'm a very real dude and everything I say I mean."

Rita recently blamed the split on distance, saying: "I'm not going out with Rob. We were close for a while, but it didn't work because I was never there. I was like a ghost."