Adrienne Bailon responded to Kim Kardashian after the reality star slammed her for speaking about her relationship with Rob Kardashian.

"Fame and career are two different things. I've always had a career. I have been working hard since I was 15 years old. Being someone's 'girlfriend' was never what I wanted to be famous for," she wrote in an Instagram post on Thursday. 

"What makes you 'famous' isn't always what you want to be 'labeled' as, or known for. If anyone should understand that...It should be you," she continued.

The feud began after Bailon told Latina magazine that her relationship with Kardashian tainted her professional life. The former Cheetah Girls star dated Kardashian for two years from 2007 to 2009 and also made appearances on his family's popular reality show, Keeping Up With The Kardashians. The two broke up because of his infidelity.

"To be stuck with that Kardashian label, that was so hurtful to me and to my career. I probably realized that too late-not that it would've affected my decisions in terms of who I dated, but it would've affected my decision to appear on the show," Bailon told the magazine in the September issue.

Kim took to Twitter to defend her little brother, who is dealing with his own personal issues.

"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," she wrote on Tuesday evening. "So sad when people try to kick my brother when he is down #FamilyForever."