Elon Musk’s GF, Grimes, Signs on to Judge ‘Alter Ego,’ New Competition Show

Musical heavy-hitters Alanis Morissette and will.i.am are teaming with Grimes and FOX to reinvent the singing competition show … as they all serve as judges on “Alter Ego.” Elon Musk’s GF is making a rare TV appearance for the new series, which…