'Iron Man' star joins Instagram!

Robert Downey Jr. is now on Instagram and he's began posting!

The 50-year-old 'Iron Man' star became part of the photo-sharing site on Monday, April 13.

Downey posted his  first Instagram photo the same day showing a candid shot of his 'Avengers: Age of Ultron' co-stars including:
Chris Evans, Chris Hemsworth, Jeremy Renner, Scarlett

Johansson, Mark Ruffalo and Jimmy Kimmel seated all in a row on a couch backstage at Jimmy Kimmel Live!

He captioned his debut post: ''Come get me, Instagram....,''

Downey Jr. joined Instagram in the knick of time, as he kicks off press for the anticipated Avengers follow-up, which hits theaters May 1.

The actor already has 89.7000 followers in less than 72 hours.

Who will not follow 'Iron Man' on Instagram?