Instructions
Finding a Vampire
Visit a Bridgeport cocktail lounge that admits the general public if you don't already have at least one celebrity star.
Go to Plasma 501, Bridgeport's local vampire hangout, once you have at least one celebrity star.
Look for a Sim with slightly translucent skin and glowing eyes. If you see one matching this description, you've found a vampire.
Introduce yourself with the "Friendly Introduction" social.
Persuading a Vampire to Turn You
Befriend your new vampire acquaintance by repeating friendly interactions from your social menu until your relationship changes from "Acquaintance" to "Friend."
Select the "Ask to Turn" interaction from your socials menu.
Head home and go about business as usual after you see an animated gush of blood and a flurry of bats around your Sim. You'll see the animation again two to three game days later, indicating that your transformation into a vampire is complete.