Katy Perry

These celebrities are sober.

From donut-licking to (fake) severed heads, these celebrity antics had us in a tizzy.

From Kanye West to Lady Gaga, these songs faced serious backlash.

We've got a doppelganger in our midst!

Remember when Kanye West called Taylor Swift out for lying?

Katy Perry's shoe line has raised some concerns.

From Katy Perry to Cardi B: were these fashion picks really Grammy-worthy?

Find out which of your fave celebrities were troublemakers in school.

This singer had quite the lucrative year.

It's been a wild ride for Hollywood romances.

Screenshots are a negligent tweeter's worst enemy.

From Khloe Kardashian and Lamar Odom to Tommy Lee and Pamela Anderson, look back at all the Hollywood couples who ran — not walked — toward the wedding aisle.