Sorority House Vampires (1998)

The UFO-Demon, Rabaalhazor, has sent the vampire, Natalia to destroy the Earth. Each time she takes a victim a natural disaster rocks the planet. Humanity's only hope is the sexy sorority pledge, Buffy, and the members of her sisterhood. She must not only save the world but she also must save herself from the perverted desires of both Rabaalhazor and Natalia.