an extremely curvy Elvira Misstress of the Dark with an hourglass figure and an unusually enormous, heavy, full bosom

"Elvira, Mistress of the Dark, depicted with voluptuous curves providing an hourglass figure silhouette. The focus of the image will be on her extraordinarily large, full, and heavy chest. She should have an alluring and mysterious feel to her that matches her dark-themed character. Elements such as a low-cut, tight-fitting black gown showing off her curves, a high slit in the dress to show an ample amount of leg, and a dark yet glamorous makeup style are essential aesthetics.