'American Horror Story' might be all about monsters, but Ryan Murphy has hit the jackpot as he just cast the mother of all monsters to appear on Season 5 of the FX series. The horror anthology seems to have made some extremely appropriate casting choices, as Lady Gaga just announced that she would be starring in the new installment this fall. The 'ARTPOP' singer revealed the news on her Twitter account and even previewed what the new theme will be in a short video clip. In traditional Gaga fashion, the star showed off a pretty elaborate and gruesome costume that looked like a bloodied face. As she turned to the camera, she said, "'American Horror Story' Season 5." She then removed the mask and whispered that the new theme will be "'Hotel.'" Read More »