Kim, 33, took to Twitter to slam singer Adrienne Bailon, who dated Rob for two years (2007-2009), reported Ace Showbiz.
"Funny how she says being with a Kardashian hurt her career yet the only reason she has this article is because she is talking about a Kardashian," she tweeted.
"So sad when people try to kick my brother when he is down #FamilyForever," she wrote, showing her support for Rob.
Previously, Bailon took a dig at Rob, saying she was confused why people sided with Rob while he cheated on her.
