From Cher to Chewbacca, nothing says 'Happy Holidays' like Christmas kitsch.
The first British astronaut to visit the International Space Station took a 'long, long time' to thank Elton John for his good wishes, then paid tribute to the singer as he explained why.
The singer recorded the classic Wham! cover for her latest album, Emotion.
Pop stars, like the rest of us, had marriage equality on their minds in 2015.