Katy Perry

From Grimes to Madonna to Joanna Newsom, these are the albums that defined our 2015.

An angry Christian mom recently confronted Katy Perry's father Keith, who's a preacher, and cussed him out for not being a better father. Apparently the woman's son was "sent to hell" because he watched Katy's video for "E.T."....and that, of course, means KATY'S FATHER is to blame...

From Miley Cyrus, to Ariana Grande, to Nicki Minaj, we take a look at our favorite 2015 celebrity Halloween costumes.

Find out who won at the 2015 MTV EMAs, hosted by Ed Sheeran.

Andy Cohen brought up the alleged diss track on 'Watch What Happens Live.'

These pop videos are totally—and literally—killer.

One rather adoring fan made the Rock in Rio concert something to remember for the pop star.

Yikes!  Katy Perry gets kissed and groped by an over-excited fan, she may have been on something as well.  I think Katy handled this well though.

Taylor's five for five with her '1989' singles.

Between Lady Gaga and Nicki Minaj, these celebs' green dye-jobs will leave you totally envious.

And, ladies and gents, he's gonna let his colors burst.

At her first Burning Man, Katy Perry learned the hard way that Segways and the desert don't mix.