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

Robert Duvall
Age: 82
Occupation: Actor and Director
Known For: A career spanning more than 50 years that includes such legendary films as 'The Godfather,' 'Network,' 'The Great Santini,' 'Apocalypse Now' and the cult classic 'True Romance,' his Oscar-winning performance in 'Tender Mercies,' and being a rare Hollywood Republican

Diane Keaton
Age: 67
Occupation: Actress
Known For: Being an early muse of director Woody Allen, winning an Academy Award for 'Annie Hall,' appearing in other films like 'Looking for Mr. Goodbar,' 'Reds' and 'The First Wives Club,' her quirky fashion sense, and previous relationships with Allen, Warren Beatty and Al Pacino

Marilyn Manson
Age: 44
Occupation: Singer
Known For: His gender-bending and controversial stage persona and image as lead singer of the eponymous band Marilyn Manson, songs such as 'The Beautiful People,' and a completely illogical previous marriage to incredibly hot burlesque performer Dita Von Teese

Bradley Cooper
Age: 38
Occupation: Actor
Known For: Roles in the films 'The Hangover,' 'The A-Team' and 'Wedding Crashers,' being People magazine's 2011 "Sexiest Man Alive," a previous relationship with Renée Zellweger, and a current relationship with 'Avatar' actress Zoe Saldana

January Jones
Age: 35
Occupation: Actress
Known For: Playing Betty Draper on AMC's retro drama 'Mad Men,' roles in films such as 'Anger Management,' 'We Are Marshall' and 'X-Men: First Class,' and reportedly being more than a bit of an ice princess

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