@Dave
Correct me if I'm wrong but wasn't Aguilera the one who said in one interview at the Grammys -with Carson- that she was so excited of being nominated for best new artist just like her IDOL Mariah Carey did back in 1991?
She may have loads of favorite singers -Etta, Whitney, you name it- but Carey has always been her #1 -- It's just that she refuses to keep on talking about her after having this "unfortunate encounter" a few years ago. Encounter that you're very much aware of, I presume.

Too bad they cannot get along anyway.