The news has just broken that The Shallows actress has given birth to baby number two, with husband Ryan Reynolds at her side.
A source confirmed to Entertainment Tonight that Blake gave birth earlier this week at a New York City hospital.
The Gossip Girl star already has one child - a daughter called James - with partner Ryan, as of December 2014.
So this is the second addition to their growing brood.
Blake wowed the fashion set this year with her incredible pregnancy style, which included an amazing custom Burberry gown at the 2016 Met Gala.
We wish the lucky pair every happiness.