Katy Perry has been a pop star, actress and girl-kisser — but, until now, never a Vogue cover girl.

Perry, wearing a rose-print, off-the-shoulder dress, graces the July cover (inset) in a barnyard-themed picture snapped by Annie Leibovitz.

Perry tells Vogue that, despite her success, she is plagued by doubts:

“I’ll be, like, did I just get lucky, or did I mass-manipulate the world?”