Both are huge media stars. But musically, who has made the bigger impact on the world more?

Justin.

Bieber by far.

When will these ****ing threads stop? For real right now.

Unfortunately, Bieber

Justin

Justin.

Justin Bieber? Yes, he's the biggest popstar for kids/teenagers.

But the only famous song by him WW is Baby..... only kids and teens know his music.

Teenagers, adults, kids, all know about Katy, at least I Kissed A Girl, Hot N Cold, Firework...

I mean, i am not delusional... if we are talking about Celebrities, Justin Bieber is famous WW and everybody knows him, maybe he's a bigger celebrity. But Katy's music is more popular WW... she has more hits WW.

Bieber, isn't katy local?

The mods should do something about all these threads.

I much prefer Katy, but Bieber...

No

What's Wrong with them? This one hasn't been done before. and they aren't as annoying as all the "Who/what is more iconic" Threads

Katy isn't local.

Bieber.

Look at their WW stats and you will se Katy Perry is WAY bigger than JB WW

As celebrities: Bieber.

Their music: Katy.

I think Katy is actually bigger than him WW.