0President Obama, Mariah Carey & More Celebrity Christmas Twitter PicturesSelf-PortraitistsMiley Cyrus in a beard, John Mayer as Santa for Katy Perry, and more holiday shots celebrities posted.Updated Jul. 14, 2017 3:40AM EDT / Published Dec. 27, 2012 4:45AM EST Niall HoranTwitter / @NiallOfficial Lena Dunham Instagram / @lenadunham John MayerTwitter / @ KatyPerry Justin BieberTwitter / @justinbieber Miley CyrusTwitter/ @MileyCyrus Mariah Carey & Nick CannonInstagram / @nickcannongram Kim KardashianTwitter / @KimKardashian Barack ObamaTwitter / @barackobama
Niall HoranTwitter / @NiallOfficial Lena Dunham Instagram / @lenadunham John MayerTwitter / @ KatyPerry Justin BieberTwitter / @justinbieber Miley CyrusTwitter/ @MileyCyrus Mariah Carey & Nick CannonInstagram / @nickcannongram Kim KardashianTwitter / @KimKardashian Barack ObamaTwitter / @barackobama