Happy 50th Birthday to Robert Downey Jr... Aka Tony Stark/ Iron Man!

Genius. Billionaire Playboy. Philanthropist... And now BIRTHDAY BOY OF 50.

Celebrating his 50th Birthday this April 4th, 2015, Iron Man star, Tony Stark himself, and Hollywood actor Robert Downey Jr. just turned the big 50 today! Here's wishing the man with style and profile in the Marvel Cinematic Universe many happy returns!

Of course, he does Ol' Shellhead in style... Everytime.

Iron Man 2 Movie Clip: Sky Dive
Besides his adventures on the Big Screen, RDJ is also known for contributing his time to charities... Such as this recent one with The Collective where he helped give a kid a bionic arm!

The Collective Project: Robert Downey Jr. Delivers a Real Bionic Arm
So again... Happy Birthday RDJ! See him appear next in Avengers: Age of Ultron in a few weeks!