I don't have a clue who Lena Dunham is. But I stopped paying attention to the big name stars a long time ago. Back in the past I knew the names of most of the big Hollywood stars. Now I just watch a movie if I am interested in the movie and I don't care who the actors and actresses are.
The sad thing is in our current culture there are all kinds of people who know the names of these actors, actresses, sports stars, singers, etc. But some of these people don't have a clue who George Washington was, or when the USA became a country, or who bombed Pearl Harbor, or even what is happening in the world today.
The big name stars stopped meaning much to me a long time ago.