Music's biggest stars were getting the word out to their followers about World AIDS Day today. Surprisingly, the most touching message came from Kesha saying her first experience with death was after a good friend died from the disease. Nicki Minaj was warning young African American women, not unlike herself, to use protection and get tested. Boys take note, if you want to be seen as a real man in Skylar Grey's eyes, you better be packing protection! Elsewhere on Twitter, the Grammy nomination congratulations continue. Christina Aguilera was sending kind words to fellow 'The Voice' judges Blake Shelton and Cee Lo Green for their nods. Which made us realize, every single coach on 'The Voice' has been nominated for a Grammy! There was also a strange tweet from Redfoo of LMFAO. For having one of the biggest songs and albums in all of pop music this year, their names were totally absent from the nominations list. Maybe they just party rocked too hard. See what your favorite stars were chirping about today!