Katy Perry has taken to Instagram to call out the haters, slamming them as 'unhinged and unhealed' amid her receiving criticism over her historic Blue Origin flight to space and her Lifetimes Tour choreography.

"My therapist said something years ago ..., 'no one can make you believe something about yourself that you don't already believe about yourself,'" she said.

Katy Perry has reassured fans she's doing "OK" following a challenging few weeks. The singer, 40, recently copped backlash over her history-making all female flight to space on Jeff Bezos' Blue Origin rocket and after kicking off her global Lifetimes tour.