The Voice Christina Aguilera debuts red hair at Hillary Clinton event 06/08/2016 Christina Aguilera debuted new red hair while supporting presidential hopeful Hillary Clinton on Monday. Read More RELATED NEWS Gwen Stefani joins CNN's New Year's Eve broadcastChristina Aguilera denies she quit 'The Voice' due to Gwen StefaniChristina Aguilera slams 'The Voice' -- "It's not about music" TAGS: Christina Aguilera Ellen DeGeneres John Legend Stevie Wonder Ricky Martin