Rita Ora's spokesperson says the British chart-topper is not prepared to comment on her former boyfriend Rob Kardashian's tweets, in which he appeared to accuse her of cheating on him with TWENTY other guys. After news of their split broke, Rob - the brother of Kim Kardashian - took to Twitter to vent his anger.

"She cheated on me with nearly 20 dudes while we were together... But I mean 20?!!!!" he tweeted in the early hours of Monday morning (December 3, 2012). Minutes later, Rob added, "How can a woman who is so busy trying to start her own career have time to be with so many dudes while in a relationship?! I am actually disgusted." The tweets were in the Twittersphere for around 30 minutes before the reality star decided to delete them (but not before they went viral and were reproduced on sites including Mail Online). His sister Khloe Kardashian attempted to step in, tweeting, "Rob be nice kiddddd," before reflecting, "Social media is so much drama. Hehehe thank goodness there was no social media when I was younger. Too much drama in the LBC." It seems the Kardashian clan never quite took to Rita, with Kim seemingly forgetting that her brother was dating the singer when tweeting in August, "When out to dinner w my brother @RobKardashian every gorgeous persian/armenian girl stares at Rob! I think that's what he needs in his life!" Sister Kourtney was quick to re-tweet the post.

Rita Ora has announced details of her forthcoming Radioactive tour, with tickets on sale this Friday (December 7, 2012).

Watch her video for Shine Ya Light below: