Emily Blunt and John Krasinski
Emily Blunt and John Krasinski have welcomed their second child together Reuters

Emily Blunt and husband John Krasinski have welcomed their second child together. The 36-year-old actor took to Twitter to share the news.

The License to Wed star, who has daughter Hazel with Blunt, tweeted: "What better way to celebrate the 4th... than to announce our 4th family member!!! 2 weeks ago we met our beautiful daughter Violet #Happy4th"

The Devil Wears Prada star and Krasinski started dating in November 2008 and were married in 2010 at a ceremony in Italy. Blunt told The Times in April 2012: "I feel like everyone poo-poos actor relationships because they say they always end in divorce and tears.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."

Blunt had also spoken about the couple's desire to start a family. She told Manhattan magazine in May 2012: "We want to have children; I just don't know when yet. I'm just not sure about the timing of all of that. We're both from big families so I think it's something we want."