3. Mariah Carey
Mariah and Wendy have publicly gone back and forth with each other for years — while some comments have been subliminal, others have been more, well, to the point. In 2008, Mariah Carey spoke about Wendy’s interview style in her song “Touch My Body,” singing, “‘Cause they be all up in my business like a Wendy interview but this is private, between you and I”. And most recently, Wendy called Mariah “classless” for feud with Nicki Minaj on American Idol.