Katy Perry

These celebrities are sober.

This video is so fetch.

The actor addresses how his previous failed marriage has affected his current relationship.

The Russian TV host claims the pop star tried to 'kiss' and 'touch' her.

Anderson Davis says the singer was nothing but professional with him.

Model Josh Kloss claims the pop star exposed his penis at a party.

The catchy summer track was co-written by Charlie Puth.

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

The pop star even made a joke while on the stand.

Katy revealed how her and Taylor's reconciliation happened IRL.