"Sisterhood of the Traveling *Maternity* Pants," assemble!

You probably saw America Ferrera's sweet New Year's announcement that she and husband Ryan Piers Williams are expecting their first child together. America is the last of the four original "Sisterhood of the Traveling Pants" stars to get pregnant, and they all gathered to celebrate her impending arrival.

Here's what costars Amber Tamblyn and America Ferrera posted:

Their movie came out in 2005, with a sequel in 2008, and they are still close friends, regularly getting together like this. That is beautiful.

Yeah, maybe just give a third "Sisterhood" film that maternity title and let's roll.

The "Sisterhood" stars are all in their 30s now, with thriving careers and growing families: Alexis Bledel, 36, has one child with husband Vincent Kartheiser; Blake Lively, 30, has two kids with Ryan Reynolds; Amber Tamblyn, 34, has one child with husband David Cross; and now America, 33, is pregnant with her first child.

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