Blake Lively Is Posting Amazing 'Sisterhood Of The Traveling Pants' Pics

Teen movie franchises can act as breeding grounds for two things: crippling drug addictions and lifelong friendships!

From the look of Blake Lively's Instagram, the latter is true as she probably still passes around a pair of magical, ever-flattering jeans with her “The Sisterhood of the Traveling Pants” costars.

On Monday, Lively got handsy with "TSOTTP" pal Amber Tamblyn, captioning the photo, "#SisterWivesOfTheTravelingPants."

Hours later, Lively posted a snap of another "TSOTTP" alum, America Ferrera, in her new NBC series, “Superstore.”

"The Age of Adaline” star gushed,

Whoever isn't watching @americaferrera on Superstore right now is missin out!! Wait... Crap. Where are my hands again?!?? #MoreSisterWives

Friends who pants together, stay together.