Nicki Minaj & Cardi B
The two rappers got in a heated altercation at the Harper's Bazaar Icon Party in September over issues surrounding Cardi's parenting style. Of course, this all started over an alleged Twitter like, but it made some serious waves. Cardi defended herself by emphasizing that she turned down a tour with Bruno Mars to stay home with her newborn daughter, and admitted that the party wasn't the time or place to have this argument.