Blake Lively Cradles Amber Tamblyn's Baby Bump in a Sweet New Snap

This week, Amber Tamblyn announced her pregnancy in a striking op-ed for Glamour Magazine. On Thursday, fellow mom, close friend, and The Sisterhood of the Traveling Pants costar Blake Lively showed her personal solidarity in a new Instagram photo with a truly glowing caption. "So proud of my dear friend, and new mama to be," Blake wrote. "Whatever your beliefs, one thing is certain, the world must be a better, safer place for women and girls." In the image, Blake paired the photo from the article with a personal photo of her and Amber. The two are cuddling, and Blake's grabbing the little growing baby bump.

We've caught plenty of glimpses of Blake and Amber's friendship over time. This year, she shared a different cuddled up pic with Amber, and this past Summer yielded a full The Sisterhood of the Traveling Pants reunion. Blake even attended Amber's wedding in 2012 with her husband, Ryan Reynolds! We have a feeling Blake and Ryan's two children will make perfect playmates once Amber becomes a mom herself, and we can only hope we'll get to see the photo evidence.