Mariah Carey has slammed an online report that quotes her as saying she'd never perform on the same stage as Jennifer Lopez as "pathetic" gossip. The R+B superstar insists she is not engaged in a feud with Lopez and that the story is a "complete untruth". She says, "This is just some internet gossip and it's pathetic that people actually entertain the thought that this could be real. "This is another sad example of two strong women being pit against each other."