For these Hollywood stars, Halloween day is more than just a holiday. It's a special day to celebrate their birthday alongside family and friends, and well perhaps, go trick or treating, too.

Vanessa Marano celebrates her 20th birthday today. The California star, is known for playing the role of Bay Kennish, on the ABC family hit show, Switched at Birth . Varano, began acting at the age of two, and landed her first role in the animated film, Finding Nemo lending out her vocal talents. She has also appeared as a guest star on shows like, Gilmore GIrls, and Ghost Whisper.

Willow Smith also celebrates her birthday today. The singer, turns 12-years-old. The daughter of Will and Jada Pinkett Smith is known for her most famous song "Whip My Hair." She's appeared in several films like I Am Legend, and made a performance in Kit Kittredge: An American Girl . Jada Smith has also served as an ambassador for Project Zambia, helping Zambia youths whose parents have died of AIDS. Her brother Jaden Smith, is also a singer, and her father Will Smith first hit stardom in the hit TV show, Fresh Prince of Bel-Air .

Lastly, known for his famous line "You can do it!" in the film Waterboy Rob Schneider turns 49. Schneider, has also appeared in films like 50 First Dates alongside Drew Barrymore, and The Hot Chick . The former writer and cast member of SNL, was featured in Deuce:Bigalow Male Gigolo playing a fish tank cleaner in search of love. Other films he starred in are Grown Ups , You Don't Mess with the Zohan and The Animal .