1. Adele's '25' Album Breaks *NSYNC's Single Week Sales Record
2. Terrorists Attack Eagles of Death Metal Concert at the Bataclan in Paris
3. Iggy Azalea and Britney Spears' Passive Aggressive Twitter Fight Over 'Pretty Girls'
4. The Meek Mill Vs. Drake Feud
5. Lenny Kravitz's Pants Split on Stage, Revealing a Little Too Much
10. Maroon 5 Releases Wedding-Crashing 'Sugar' Video
11. Taylor Swift Reveals Why She Won't Talk About Katy Perry Anymore
12. Lady Gaga Encourages Taylor Swift's Romantic Endeavors
13. Nicki Minaj Accepts Taylor Swift's VMA Apology
14. Khloe Kardashian Explains Why It's Okay for Sister Kylie Jenner to Date Tyga
15. Kanye Almost Pulls a 'Kanye' on Beck at the Grammys
18. Lady Gaga Performs a 'Sound of Music' Medley at the Oscars
20. Jennifer Lopez Pays Tribute to Selena at the Billboard Latin Awards
21. Zayn Malik Leaves One Direction, Works With New Producer Naughty Boy
22. Miley Cyrus's V Magazine Photos Are NSFW
23. Justin Timberlake's Son Silas Makes His Instagram Debut
24. Katy Perry's 'Left Shark' Wins the Super Bowl
25. Whitney Houston's Daughter Bobbi Kristina Brown Tragically Passes Away
26. Sia Apologizes For Pedophilia Concerns in 'Elastic Heart' Video
http://www.billboard.com/photos/6777...ies-of-2015/27