Robert Downey, Jr. Goes Shirtless, Plays with Exton in St Barts!

Robert Downey, Jr. shows off his shirtless body as he goes for a dip in the ocean to cool off on Sunday (December 29) while vacationing in St Barts.

The 48-year-old Iron Man star was spotted on the beach with his wife Susan and their adorable baby boy Exton, 22 months. Robert and Exton played in the sand together while enjoying the sunny day – so cute!

PHOTOS: Check out the latest pics of Robert Downey, Jr.

Be sure to look out for Robert in his next film Chef, which is set to be released on May 9, 2014. Robert reunites with Iron Man co-star Scarlett Johansson for the flick!

25+ pictures inside of Robert Downey, Jr. going shirtless while vacationing with his family in St Barts…