The actress, 24, who attended the premiere of the film, said they are her her angels, reported Us magazine.
"Oh my God. They are my angels. They are my kittens. We can't even watch the movie together.
"It's really really hard acting with your best friend, because you have to pretend to be somebody else, and they are pretending to be somebody else. And you have to keep eye contact with them and be serious. It's really hard," she said.