Justin Theroux is thrilled to be a dad!

The 54-year-old actor attended the New York City premiere of his new movie The Devil Wears Prada 2 on Monday night (April 20) with wife Nicole Brydon Bloom.

The outing was the couple’s first date night since their son was born, which they announced via Instagram post last Friday.

Chatting with E! News during the red carpet event, Justin said he’s “in heaven.”

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“It’s so hard to even encapsulate what it feels like,” he said. “But it’s the most wonderful thing that’s ever happened to me. I can’t think of anything that tops it.”

He and Nicole are so enamored with their baby boy that they couldn’t wait to rush back home to him.

“Soon as the credits roll, I’m out,” Justin joked.

Speaking to Extra about what his sleep has been like since having a newborn, Justin said he is “getting some sleep,” thanks to his “fabulous wife.”

“She’s got the hardest job right now,” The Leftovers alum added.

Justin‘s ex Jennifer Aniston recently showed him support for his new baby!

You can also check out photos of the entire The Devil Wears Prada 2 cast right here.

Find out what other celebrities have become parents recently!