"Sisterhood of the Traveling Pants" co-stars Blake Lively, Amber Tamblyn and Alexis Bledel reunite to support cast-mate America Ferrera who is staring in the play "Lips Together, Teeth Apart."

It's refreshing to see such a solid friendship form between the four stars even after all these years. The ladies took time to share their bonding time over social media and gave their fans more reasons to get excited over the rumoured upcoming 3rd instalment of "Sisterhood of the Traveling Pants."

Tamblyn posted a photo of America's three fans and captioned the pic: "Go America! Supporting our girl in her play, Lips Together, Teeth Apart. #sisterhood."

A very pregnant Blake Lively glowed as she spent time with fellow film stars in the Off-Broadway matinee.In another photo, Blake, the wife of Ryan Reynolds, showed off her growing baby bump and placed it on full display when she shared another photo of her with Amber and Travis Louie in an art show opening. The sexy mom-to-be was all smiles in a long, fitted, high-waisted skirt, printed top, coat and high heels.

According to E! News, while there isn't any official news on the status of "Sisterhood of the Traveling Pants 3," Ferrera has expressed interest to make another movie."I think it would be amazing if there was [another one]!" said the "Ugly Betty" actress.

"All four of us are very connected to one another....We all have been friends for a decade now. We all went through our twenties together. All my Sisterhood girls are very close to me."

The Wrap, via MTV, reported that film is being discussed and "in the works." With the title said to be "Sisterhood Everlasting," the movie is going to be a follow up to the earlier two instalments, 2005′s "The Sisterhood of the Traveling Pants" and 2008′s "The Sisterhood of the Traveling Pants 2."

The film, with no announced release date, is said to follow a storyline that will take place a decade after the last movie and see the characters move on from being adolescents to real-life adults.

"The Sisterhood series is one of Alloy's most cherished properties and we are looking forward to continuing its legacy with 'Sisterhood Everlasting' nearly a decade after the first film was released," said Alloy president Leslie Morgenstein in a statement about her interest to make a third film. "The original film brought together an incredible group of talent who we hope to unite for fans once again."

Seeing how they support each other and manage to keep in touch amidst busy schedules, there's no doubt this sisterhood they've formed from the movie franchise is one that will last.

GETTY: MTV TRL Presents The Cast Of 'The Sisterhood Of The Traveling Pants 2'#82195824