Beyonce's mother, Tina Knowles, married actor Richard Lawson on Sunday, April 12.

In addition to gaining a stepfather, Beyonce and her sister, Solange, have also gained a stepsister.

Richard Lawson's daughter is former "Pretty Little Liars" star Bianca Lawson. Richard is also an actor, who is best known for his work on the ABC soap opera "All My Children" and the 1982 horror film "Poltergeist."

In addition to "Pretty Little Liars," Bianca's acting credits include "Buffy the Vampire Slayer," "The Vampire Diares," "The Secret Live of the American Teenager," and "Save the Last Dance," Us Weekly reports.

Bianca's breakout role was playing Megan Jones in "Saved by the Bell: The New Class" from 1993 to 1994. Since, then Lawson has continued to play characters younger than her age, says Us Weekly.

Bianca, 36, previously spoke to Ellen DeGeneres about looking younger than she is and playing younger roles. Bianca joked that while she looks young, she does not have a healthy eating regimen to maintain her youthful appearance.

"I think it's genetics. I'm not a super-healthy person!" Lawson told DeGeneres back in 2010. "I am kind of lazy, I eat tons of junk food. I feel really blessed that I get to play all these great characters even though they might be a lot younger or whatever their age. I feel happy about it."

When asked to name what role gets her most recognized, Bianca replied, "I definitely think I get recognized for 'Buffy' (Kendra) and 'Save the Last Dance'. Every time I meet people, they're like, 'Oh my god - I thought you were going to be such a b***h.'"

Bianca was in attendance for her father and Knowles' recent wedding which took place on a yacht that cruised around the harbor in Newport Beach, California, TMZ reports.

All 300 guests invited to the wedding were required to wear white. Us Weekly reports that Beyonce wore a long white lace dress and floral head band, while Jay-Z donned an all white suit.

This marks Knowles' second marriage. She was previously married to talent manager Mathew Knowles, who she divorced in 2011 following his infidelity.