Celebrities can get away with a lot, but they don't have carte blanche to say whatever they want. For instance, Lady Gaga's comment indicates that she has some business acumen. I guarantee she wouldn't have gotten away with saying something like "Nobody cares about Polaroid. This is about me.", which probably better reflects what she was really thinking. But since she said something that reflects well on her business partner, she can ultimately get away with using a bit of salty language.