She just Googles herself.
She was feeling a little insecure about a couple pictures she recently posted, so she decided to Google herself. Her search term? “Katy Perry hot.” It must have worked for her, because here’s the picture that turned up:
If you’re curious what the other two pictures she posted were, it seems like these two were the culprits. One April Fool’s joke, and in the other one, she’s getting a jaw massage.
No reason to feel insecure, Katy, you’re gorgeous as always!