Using Madison Montgomery's infamous quote from AHS, "surprise, bitch!" Lady Gaga announced this morning that she would be appearing on the 5th season of American Horror Story, titled "Hotel". She tweeted the announcement along with a teaser where she appears taking off a huge black mask confirming the amazing news. American Horror Story: Hotel premieres this October, be sure to check it out. In the meantime, watch Lady Gaga's AHS: Hotel teaser below!