Blake Lively flaunted her adorable baby bump while posing at her pal Travis Louie‘s AFA Gallery Opening on Saturday night (October 18) in New York City with her Sisterhood of the Traveling Pants co-star Amber Tamblyn. View Travis Louie AFA Portfolio Here.

“What a wonderful night with @amberrosetamblyn and @travislouie at the opening of his new show in NYC,” Blake captioned the Instagram photo. “He is one of my favorite artists and a great father, husband and man! So grateful to know him Ps. Thank you Amber for playing dress up with me #PreserveStyle Who can iSpy the @preserve_us pieces we borrowed?”

Earlier on Saturday co-star Alexis Bledel joined the girls and took an adorable selfie together before heading into a showing of Lips Together, Teeth Apart, to support their former costar America Ferrera.

“Go America!” Tamblyn captioned the Instagram snapshot. “Supporting our girl in her play, Lips Together, Teeth Apart. #sisterhood.”

“Look who dropped by my matinee today and made my day!” Ferrera added, reposting the snapshot.  “#MySisterhood! Love these women and the support they constantly show.”

The old friends caused a frenzy with Sisterhood fans when they reunited for brunch on Sept. 15. “Always a good day when I’m with my sisters #DeLosPantalones Love these amazing women,” Ferrera wrote via Instagram at the time. Tamblyn added: “Brunch with my best bitches.”

An insider recently told Us that Lively told her Sisterhood gals that she was expecting during the fun get-together, even though she waited until Oct. 6 to tell the rest of the world via her Preserve lifestyle site.

“Finally I can share my little sister’s good news!” Tamblyn captioned Lively’s first baby bump pic hours after the reveal. “Congratulations my Blakey, you beautiful woman you. What a tremendous mama you are going to be.”