Chris Hemsworth and wife Elsa Pataky welcomed two new additions to their family last week.

The parents of three, who also share 22 month-old daughter India Rose, have revealed the newly born twin boys names.

A photo was shared on the 37 year-old actress's Instagram page along with a caption that revealed they were called Tristen and Sasha.

"They are already home," Elsa captioned the cute photo in her native Spanish.

"Tristan and Sasha arrived in this world 18 March just after the full moon. Complete happiness!!"

The 'Fast & Furious 5' actress also shared her happiness in a blog she writes for the Spanish Glamour magazine this Tuesday (March 25th).

"Enjoy every second with your baby because it is the most wonderful thing of the world," she urged readers.

The acting couple announced the pregnancy news last November (2013) and confirmed they were expecting twins this past January.

Hemsworth nor Pataky have revealed the reason or inspiration behind the names of the twin boys, but the 'Thor' actor did explain how they came to agree on their daughter's name.

"It was just a name we like. I always kind of liked Indie or Indiana for a boy and she like India," Hemsworth previously told E! News. "We sorta went, 'Oh, well, whether it's a boy or a girl that will decide.' It just seemed to fit."

The 30 year-old Aussi hunk also opened up to Parade Magazine about the joys of parenthood, and the changes it brings.

"I love it," he said. "It's the greatest thing I've ever been a part of. When I am at work, she's what I'm thinking about, and when I'm not at work, she's who I'm hanging out with!"

"I think [parenthood] brings out the child in all of us," he added. "That's what's so beautiful. It reminds you of the fascination you had with things, and how you can spend hours just being with someone. It's amazing."

Congratulations to the happy couple!