Some intentional, some not!
ET's rounded up the 10 best moments that had fans in frenzy this year!
Now we know why she shared a pic of Christopher Mason to Instagram!
Selena Gomez's "Hands to Myself" music video is definitely her raciest one yet.
From Justin Timberlake to Nick Jonas and Lorde, Taylor's '1989' tour was filled with celebrity surprises!
Selena is taking a page straight out of her ex's Instagram playbook -- and we love it!
From Justin Timberlake to Selena Gomez - these are the best stars who showed up on Taylor's '1989' World Tour.
Selena Gomez posts about her own Instagram mystery man just a week after Justin Bieber's mystery girl is revealed.
The 23-year-old singer showed off her toned physique in a bikini.
The "Good For You" singer hinted that she'll be working with the photographer behind Kylie Jenner's wheelchair images.
The 22-year-old singer adorably revealed he'd marry his rumored gal pal during a cute moment on Tuesday's 'Carpool Karaoke' with One Direction.
1D joined James Corden for a revealing car ride on 'The Late Late Show' Tuesday night.
The singer made another impromptu appearance at a club on Friday.
It's been an intense year of back and forth for Jelena, but there are signs that they may reconcile in 2016.
