"Nice girls suck!" Amy Heckerling directs Alicia Silverstone, Krysten Ritter, and Sigourney Weaver in the horror comedy Vamps, which follows a pair of bloodsuckers on a twelve-step program to curb their thirst for human flesh. Things go awry when both of these fanged beauties fall in love. The first poster for Vamps has debuted. Check it out below, and yes, that is Krysten Ritter's mouth.