Katy Perry will always have a special place for songwriter pal Bonnie McKee - as well as penning some of her biggest hits, she also saved the pop star from drowning.
MCKee reveals she was working with Perry on songs for her latest album Teenage Dream when a naked swim almost turned fatal.
The songwriter tells Rolling Stone magazine, "We decided to go skinny-dipping."
Perry stripped off and ran into the ocean and was battered by a sudden wave.
MCKee recalls, "I saved Katy Perry's life and in exchange, she let me stay and write a few more songs."