Here's a look at some notable birthdays being celebrated today:

Susan Sarandon
Age: 67
Occupation: Actress and Activist
Known For: Roles in films like 'Thelma and Louise' and 'Bull Durham,' winning an Oscar for 1995's 'Dead Man Walking,' her former longtime relationship with actor Tim Robbins, and being an activist for numerous social and political causes

Anne Rice
Age: 72
Occupation: Author
Known For: Being the New Orleans-based bestselling author of gothic fiction, Christian literature and erotica, selling over 100 million books worldwide, and her popular 'Vampire Chronicles' series of novels

Russell Simmons
Age: 56
Occupation: Business Magnate
Known For: Co-founding the pioneering hip-hop label Def Jam, and creating the clothing fashion lines Phat Farm, Argyleculture, and American Classics

Alicia Silverstone
Age: 37
Occupation: Actress
Known For: Her early appearances in Aerosmith's music videos, roles in films like 'The Crush,' 'Clueless,' and 'Batman & Robin,' and her work as an animal rights and environmental activist