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Look who dropped by my matinee today and made my day! #MySisterhood ! Love these women and the support they constantly show. @amberrosetamblyn , Blake & Alexis. #lipstogetherteethapart @2stnyc

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The bond of the 'Sisterhood' is very much real!

The girls of the 'Sisterhood of the Traveling Pants' -- Alexis Bledel, Blake Lively and Amber Tamblyn -- came together in New York on Saturday, Oct. 18, to support the other member of their group, America Ferrera. Ferrera is currently starring in the off-Broadway play, 'Lips Together, Teeth Apart.'

Ferrera posted a picture on Instagram featuring her BFFs with the caption, "Look who dropped by my matinee today and made my day! #MySisterhood ! Love these women and the support they constantly show. @amberrosetamblyn , Blake & Alexis. #lipstogetherteethapart "

The four actresses previously reunited in mid-September for a ladies brunch.

Bledel, Lively, Tamblyn and Ferrera first appeared in 2005's 'The Sisterhood of the Traveling Pants' before many of them were stars. They would later reprise their characters for 'The Sisterhood of the Traveling Pants 2' in 2008. Both films were based on the best-selling books by Ann Brashares.

In April 2014, it was reported that a third movie based on the fifth and final book, 'Sisterhood Everlasting,' was in the works. However, no official casting and filming announcements have been made as of yet.