OBSESSED MARIAH & MADONNA STILL DUKING IT OUT

LONG-RUNNING pop rivals Madonna and Mariah Carey are taking great delight in each other’s misfortunes as they bid to outdo each other professionally and personally, sources squeal!

“They’re both consumed by each other and have their computer news alerts set to see what the other is doing, how their concert sales are and what the critics say,” spills a spy. “What’s really unhealthy is the scale of trash-talking. Everybody’s ears are burning with it!”