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

Billy Idol
Age: 56
Occupation: Singer and Songwriter
Known For: Being an MTV star in the 1980s with hits like 'Rebel Yell,' 'White Wedding,' 'Dancing with Myself,' and 'Mony Mony,' his trademark snarl and bleached-blond spiky hair, an awesome cameo in the film 'The Wedding Singer,' and continuing to successfully tour around the world

Kaley Cuoco
Age: 26
Occupation: Actress
Known For: Playing blonde beauty Penny on what is almost inarguably one of the best sitcoms ever, 'The Big Bang Theory,' and roles on other shows such as '8 Simple Rules' and in films like 'Lucky 13'

Dick Clark
Age: 82
Occupation: Mogul and TV/Radio Personality
Known For: Hosting long-running television shows such as 'American Bandstand,' five versions of the game show 'Pyramid,' and 'Dick Clark's New Year's Rockin' Eve,' the nickname "America's Oldest Teenager," and suffering a mild stroke in 2004

Ben Stiller
Age: 46
Occupation: Actor, Writer, and Producer
Known For: Movies like 'Reality Bites,' 'There's Something About Mary,' 'Meet the Parents,' and 'Zoolander,' and being the son of veteran comedians and actors Jerry Stiller and Anne Meara

Clay Aiken
Age: 33
Occupation: Singer, Songwriter, and Actor
Known For: Rising to fame as the runner-up on Season Two of 'American Idol,' releasing several best-selling albums, starring in 'Spamalot' on Broadway, famously coming out of the closet in 2008, and for his legions of devoted fans, who call themselves "Claymates"

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