After years of fans posting and posing for Iron Man actor Robert Downey Jr, the man himself has finally officially joined Twitter.

The Avengers: Age of Ultron actor wrote his first-ever tweet yesterday and said simply: “Talk to me, Twitter” adding the pic above.

To date the message has been retweeted over 42,000 times and he later added: “Loving all the love, folks. It's been a blast. Though can somebody please explain how anyone can keep their thoughts to 140 characters or le”.

With that great sense of humour, you know it is indeed the man himself.

Here’s to lots more where that came from, he already has over 692,000 followers and you can follow him @RobertDowneyJr