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

Robert De Niro
Age: 69
Occupation: Actor, Director and Producer
Known For: A celebrated career including Oscars for his roles in 'The Godfather Part II' and 'Raging Bull,' iconic performances in films like 'Taxi Driver,' 'Cape Fear,' 'The Deer Hunter' and 'Awakenings,' and many collaborations with director Martin Scorsese

Sean Penn
Age: 52
Occupation: Actor, Director, Screenwriter and Activist
Known For: Two Academy Awards for his roles in 'Mystic River' and 'Milk,' his marriages to Madonna and actress Robin Wright, his humanitarian work with the victims of Hurricane Katrina and the 2010 Haiti earthquake, and a beyond testy relationship with the paparazzi

Belinda Carlisle
Age: 54
Occupation: Singer and Songwriter
Known For: Fronting the 1980s girl band the Go-Gos on hits like 'We Got the Beat' and 'Vacation,' and a solo career that included the singles 'Heaven Is a Place on Earth,' 'I Get Weak,' 'Circle in the Sand' and 'Mad About You'

David Conrad
Age: 45
Occupation: Actor
Known For: Roles on TV shows like 'Relativity,' 'Roswell,' 'Boston Public' and 'Miss Match,' starring alongside Jennifer Love-Hewitt on 'Ghost Whisperer,' and appearing in the movies 'Men of Honor' and 'Wedding Crashers'

Donnie Wahlberg
Age: 43
Occupation: Singer, Actor and Film Producer
Known For: His membership in the boy-band New Kids on the Block, appearing in 'The Sixth Sense' and 'Saw' movie franchise, roles on the TV series 'Boomtown' and 'Blue Bloods,' and being the older brother of actor Mark Wahlberg

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