"When you design, you are like a sponge," she says. "It can be the girl from Gossip Girl or what happened just in Haiti." Hollywood never fails to leave her short on muses, she tells PEOPLE. "I think it's interesting to have all sorts of characters. And whether it's Lady Gaga or Beth Ditto or whoever, I think it's fantastic to see that women feel so free and they can push the limits so very far. I think it's a testament of what's going on in society."