Aw! John Krasinski and Emily Blunt are now the proud parents of a baby girl. The actress gave birth to daughter Hazel today, Feb. 16.

The first-time dad couldn't wait to share the news with his fans and took to Twitter to make the exciting announcement, writing:

The former 'Office' star and 'Devil Wears Prada' actress have been happily married for three years. They tied the knot in Italy in 2010 after two years of dating.

In December 2013, celebrity pals, including Jennifer Aniston, Amy Adams and Kristen Bell, all helped to celebrate Blunt's pregnancy with a star-studded -- but low-key -- baby shower. Reportedly, the happy couple was keeping the sex of their baby a surprise.

Well, wonder no longer -- Hazel is here, and the actors couldn't be any prouder. Congratulations to the happy couple!