Katy Perry Calls Gaga "Blasphemous"

Although Lady Gaga impressed many fans with her "Alejandro" video, one famous songbird was not amused by the edgy display. 

Singer Katy Perry released a post on Twitter that says, "Using blasphemy as entertainment is as cheap as a comedian telling a fart joke."  Lady Gaga wears a latex nun outfit in her new video and dances sexually, with crosses painted on her body.

Fans may be surprised by Perry's criticism considering her career skyrocketed because of the shock value of her first single, "I Kissed a Girl."

Perry's Twitter also features a sneak peek of her new video "California Girls." In the video preview, Perry dances in a world made from ice cream and candy, and ice cream shoots from her bra.