From Scandal Sheet Madonna vs. J.Lo:
Madonna just initiated the most awesome catfight ever: her vs. Jennifer Lopez. Me-ow! You might think that Madge has the advantage, what with her crazy arms and all, but I dunno. I'll bet Jenny from the Block fights dirty.
From Us News:
Madonna thinks Jennifer Lopez wants to copy her moves.
"Her ponytail distracted me," she went on. "Whenever artists come to see my show, they're studying me."