Blake Lively Proves That Her "Sisterhood" With Amber Tamblyn Is Still Alive and Well

Blake Lively took to Instagram on Monday to prove that her real-life sisterhood with her Sisterhood of the Traveling Pants costars is still very much alive! The mom of daughter James posted a cute reunion photo with Amber Tamblyn on Jan. 4, writing, "WHERE are my hands?!? #SisterWivesOfTheTravelingPants." She also posted a screenshot of America Ferrera's new show, Superstore, saying that anyone who isn't watching it is "missin' out." Amber also took to her Instagram in the New Year to share a few throwback photos with her former costars, including a hilarious shot of her and Alexis Bledel.

Of course, this isn't the first time the cast has reunited. The four women have stayed close over the years, getting together for brunch in September 2014 and then again the following month to catch a Broadway show. Keep reading to see Amber's throwback photos as well as Blake's new snapshots, then check out 23 totally true facts illustrated by The Sisterhood of the Traveling Pants.