Lena Dunham is hosting Saturday Night Live [1] this weekend for the very first time alongside musical guest The National. Her new promos are in typical Girls [2] fashion, meaning there's partial nudity — but it's actually not from Dunham this time! Kate McKinnon stars with Dunham in the promos; apparently Dunham promised they'd wear the same thing, but only McKinnon shows up shirtless [3]. At one point, Dunham says McKinnon looks like a "slut witch," but she's actually fully clothed at the time. Enjoy!