Jessica celebrates her 24th (international age) birthday today on April 18th,and her fellow members of Girls' Generation and her younger sister, f(x)'s Krystal, made sure to celebrate the special occasion with her!

Taeyeon shared on her Instagram, "Birthday girl jess* happy B-day ;)," along with an adorable snapshot of Girls' Generation helping Jessica blow out her candles.

Krystal also took to her Instagram to congratulate her big sister, sharing, "HAPPY BIRTHDAY to my one and only dearest sister #jessicajung MWAHHHHH," and shared a set of selcas of the Jung sisters from the past to the present.

Happy Birthday, Jessica!



Tip: Xesyre