Bianca, who is just two years older than her new step sister, has appeared in a good number of popular TV shows. Those include her break-out role in Saved by the Bell, Sister Sister, Dawson's Creek, Buffy the Vampire Slayer, Pretty Little Liars, and more recently Teen Wolf and Witches of East End. How cool must it be to say, "my father married Beyoncé's mom?!"