Chris Hemsworth has his hands full with promotional duties for The Avengers and Snow White and the Huntsman, but now the actor's taking an another role ... that of father!

Chris and his Spanish actress wife, Elsa Pataky, welcomed their first child Friday in London -- a baby girl named India, a source confirms to Us Weekly.

The couple tied the knot in December 2010.

Thor actor Chris Hemsworth, pregnant wife Elsa Pataky, Matt Damon and wife Luciana are all vacationing together in beautiful St. Barth. This trip looks like a blast!

Ms. Pataky certainly looks fabulous in her pink bikini! Her hubby and his muscular chest are definitely easy on the eyes, too. Pataky recently spoke to Hola! magazine about her pregnancy. The model told the mag, "Chris and I are ecstatic, very happy and excited."

Is it just us, or does it seem like Matt Damon has packed on the pounds? Well, he is on vacation so why not throw that Hollywood diet out the door ... at least until he returns.

See more of their ocean antics in our gallery below.

Chris Hemsworth's wife Elsa Pataky just announced she's pregnant with the couple's first child, but she's already showing off her maternity-chic style!

The Australian actor and the Spanish model have been enjoying a relaxing vacation in St. Barth, where they've been spending quality time with pal Matt Damon and his wife, Luciana, aboard a luxury yacht in the French West Indies.

Pataky confirmed the baby news to Hola! mag on Wednesday, revealing, "Chris and I are ecstatic, very happy and excited."

Congrats!

Chris Hemsworth and wife Elsa Pataky are expanding their family! The twosome are expecting their first baby, Hemsworth's rep confirms.

Check out the happy couple enjoying a vacation in St. Barth.

Pataky tells Hola! magazine, "Chris and I are ecstatic, very happy and excited. Since it’s our first child we don’t care if it’s a boy or girl, our only wish is that it’s healthy."

As for her pregnancy cravings, the actress adds:

“Everything healthy I used to like, I now don’t like. All of a sudden, the only things that sound good to me are all the sweets in the world, hamburgers, and french fries. I have never eaten popcorn, and with the pregnancy I eat it all the time.”

Hemsworth, 28, and Pataky, 35, have been married since 2010.

Chris Hemsworth dresses up as Thor for the follow-up to his hit film, while bro/Miley's boyfriend Liam hits the stores for some shopping. In your opinion, who's the hotter Hemsworth?

Superhero celebs put away their capes and shields to don suits and ties for the Captain America premiere at, appropriately, the El Capitan Theater in Los Angeles Tuesday.

Chris Evans (Captain America), Chris Hemsworth (Thor) and Robert Downey Jr. (Iron Man) all came out in support of the film. The question is ... which hero looked sexiest?

Our vote is for Hemsworth ... what's with the Elton John glasses, Chris Evans?! This was your big night!

The trio will star, along with Scarlett Johansson, Jeremy Piven, Mark Ruffalo and Samuel L. Jackson (who also hit the premiere) in the upcoming Avengers movie.

Also at the premiere was Vanessa Hudgens with her newly shorn hair -- see it in our video and gallery below!

But while the big event looked sunny and fun ... what kind of reviews is Captain America getting? Find out after the jump ...

Chris Hemsworth looked dapper on the red carpet for the premiere of his latest flick Thor.

The hunky actor was happy to greet fans outside of the El Capitan Theatre in Hollywood. Unfortunately pregnant co-star Natalie Portman was a no-show ... but we have a feeling she has other things on her mind.

Colin Farrell isn't in the Marvel movie, but we were sure happy to see him strutting his sexy stuff. What a stud!

See which 57-year-old The Thomas Crown Affair actress still looks stunning ... after the jump.

Interview

Chris Hemsworth is hanging tough for Interview magazine's May issue.

The 27-year-old Thor stud is opening up about his love for the superhero's heavy hammer. He tells the mag:

“It is a pretty impressive piece of equipment. It was quite heavy, so that helped with the stunts. If it was too light, you would swing it around like a toothpick and it wouldn’t look impressive. When there is some weight to it and you have to physically use your shoulder and back, it gives you a sense of power. I got very comfortable holding it. When I did the earthbound scenes without it, I felt naked.”

Nice visual! Read what Chris says attracted Natalie Portman to her role in Thor ... after the jump.