Disney to "Dirrty" Is she still the girl next door? Should she be? Naughty Christina explains. music_aguilera_christina.jpg 60x45 G0 http://abcnews.go.com/sections/2020/videofiles/Video/030214aguilera_video.ram 10454184901640 abcnews_free.gif lock_icon.gif superpass.gif http://abcnews.go.com/sections/2020/videofiles/Video/030214aguilera_video.ram 10454184901641 PLAY lock_icon.gif lock_icon.gif lock_icon.gif headline