These photos are from a photo shoot for a 1967 issue of Esquire magazine and show Andy Warhol dressed as Robin and chanteuse, Nico as Batman.
Three years earlier, before the campy television series starring Adam West and Burt Ward became an overnight sensation, Warhol shot a film called Batman/Dracula. No rights were obtained from DC Comics and the film has only been shown at at exhibits of Warhol's work. If you are expecting to see some superhero vs vampire action, you might want to look elsewhere, this film is a purely experimental montage of assorted images. You can view it on YouTube if you'd like.