E! Online | Did Demi Lovato Just Diss Mariah Carey? Singer Defends Jennifer Lopez in On-Going Drama E! Online The post compared Ariana Grande to Mariah, claiming the former Nickelodeon star is a lesser version of the 46-year-old singer. Demi commented, saying, "You got it the wrong way around honey," before bringing up Mariah and J.Lo's decades-long feud that ... Demi Lovato calls Mariah Carey's comments 'nasty' Demi Lovato SLAMS 'Nasty' Mariah Carey For The Way She Treats Jennifer Lopez! Demi Lovato calls out Mariah in response to Ariana Grande meme |