It looks as though Adrienne Bailon and the Kardashian clan have buried the hatchet. On Sunday, Kourtney Kardashian took to Instagram and uploaded a photo of herself hanging out with Kylie Jenner and Rob's ex Adrienne, writing, "Reunited best friends lol." Kylie also posted a similar snap, along with a caption that read, "Cause we are sistersss," referencing a song from Adrienne's former girl group The Cheetah Girls. Adrienne shared the same photo as Kylie but captioned hers with three heart emoji.

Rob and Adrienne began dating in 2007 and broke up in 2009 because he cheated on her [1] with another woman. After their split, Adrienne made some negative comments about Rob [2] to Latina magazine, saying he was "so disloyal" and how being associated with the Kardashians [3] "was so hurtful to me and to my career." Adrienne also appeared on a few episodes of Keeping Up With the Kardashians, including one in which she and Rob both got tattoos. Following her interview, Kim and Khloé Kardashian responded with a series of heated tweets [4], including one that read, "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." Read on to see all of their posts.