Emily Blunt and her hubby John Krasinski welcomed a baby girl named Hazel on Sunday.

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The proud parents, who wed in 2010 in Italy, announced the birth via Twitter.

"Wanted to let the news out directly. Emily and I are so incredibly happy to welcome our daughter Hazel into the world today! Happy bday!" Krasinski tweeted.

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It's the first child for The Office actor and Blunt, who have been together since November 2008.

Despite being together for several years, Blunt, 30, and Krasinski, 34, have managed to keep their relationship low-key.

"I feel like everyone poo-poos actor relationships because they say they always end in divorce and tears," Blunt told The Los Angeles Times in April 2012. "But that's only because it's in the news and it's broadcast to the world. John and I can talk about everything, and it's nice, because we have a very deep understanding of what the other person does."

Krasinski also boasted about his wife when he visited The Ellen DeGeneres Show in 2010 and said the couple makes it work despite their busy schedules.

"It's one of those things where it's very difficult to be away from each other but at the same time we just fly back and forth all the time," he said. "It's always more fun when she's around."

DeGeneres also tweeted her well wishes to the couple on Monday.

"Welcome to the world Hazel Krasinski! It's a beautiful name, and worth 240 Scrabble points," she wrote.

Tags: Emily Blunt John Krasinski