Khloé Kardashian furious with her friend Adrienne Bailon

The 30-year-old beauty tweeted: "Thought her and I were cool SMH (Shake My Head)."

She also retweeted a message from a fan that read: "Adrienne has a lot of nerve to talk s**t about Rob when he is obviously dealing with s**t."

Another fan asked Khloé whether her sister Kim, 33, was "shading" Adrienne when she posted the following tweet earlier: "So sad when people try to kick my brother when he is down #FamilyForever... Funny how she says being with a Kardashian hurt her career yet the only reason she has this article is bc she is talking about a Kardashian (sic)."

Khloé responded: "Don't think it was a secret. For sure. Don't kick my brother while he's down."

The famous sisters rushed to defend Rob after 'The Real' co-host Adrienne slammed him for cheating on her and admitted she regretted making cameos on his family's E! reality series before they split in 2010.

She said: "To be stuck with that Kardashian label, that was so hurtful to me and to my career."