Chris Hemsworth & Elsa Pataky Vacation With Matt Damon & Luciana Barroso in St. Barths (PHOTOS)

Chris & Chris on Set!
Hemsworth & Evans film 'The Avengers.'
Talk about famous worlds colliding.

This week, hunky Thor actor Chris Hemsworth spent some time vacationing with his wife, Elsa Pataky, in St. Barths, where the happy-go-lucky couple were seen getting some R&R in the ocean.

Chris and Elsa were also joined by another famous couple, Matt Damon and Luciana Barroso, while they were down there, adding more heat to an already-hot destination spot.

Earlier this week, Chris and Elsa announced that they were expecting their first child together.

Check out photos of the famous couples now!