1. Gaga was an elf.
2. Joe Jonas was in Paris.
3. Chrissy Teigen posed.
4. Mariah Carey was a stair queen.
5. Jessica Simpson was the mask.
6. Jennifer Lopez prepared for the cold.
7. Drake was chilling.
8. Zac Efron became a blonde.
9. Kendall and Kourtney went skating.
10. Nick Jonas was a hat guy.
11. Britney Spears and her son had some fun.
12. Beyonce and Jay Z enjoyed the PJ life.
13. And Rihanna looked gooood in purple.
