When 07.10.2014
Robert Downey Jr. dresses down in a baseball cap, T-shirt and leather jacket on arriving outside a New York studio building to appear on 'The Late Show with David Letterman'. He greets paparazzi with his usual enthusiasm before going to sign autographs for fans.
There's been a lot of buzz recently about whether or not the 'Iron Man' star will return for 'Iron Man 4', first apparently denying he will be involved, then seemingly confirming his involvement, and now it seems things are still up in the air.