Iron Man Suit - CGI or wearable?

From Iron Man 2

Is Robert Downey Jr. wearing a real prop suit or was the suit digitally added?

Interesting article from Wired.com including the dimensions of Iron Man:

"Secrets of Iron Man’s New Suits"

I saw Iron Man and Iron Man 2 movies. There were shots which appeared to have been actual suits pieces worn by the actors depending on the shot. But I was surprised according to the special effects designers that they were pleasantly surprised that they could actually create wearable armored suits for the movies.



It looks like the red spandex had digitally armor added.

Here's an article by one of the creators Clark Schaffer.

Here's a video clip from G4:

Making Iron Man's Suits: Stan Winston Studios