Hey I'm new to the forums, but I just wanted to add that I've gotten a vampire gnome. It's definantly female. She's got short black hair, a black top, white gloves, red skirt, purple wings, black fishnets and high heels, a little necklace, and pink/grey eyes.
Sorry I can't post a picture the computer my sims are on isn't hooked up to the Internet, and it's too late and I'm too tired to do anyhting about that right now.
Anyway, my sims weren't doing anything special to get her (the male sim in the household is aquainted with two vampires but I've never had them interact while I have had control of him) she just popped up in the kitchen. She's really cute, right now she's in a flying pose and kind of floating in mid air.
Happy Simming!
Edit: This may be a coincidence, but she moved outside at night the back inside when the sun came up.