Jessica and f(x)'s Krystal's sisterhood was evident on the set of 'My Lovely Girl', whereJessica sent out a snack truck to cheer her sister on!

Jessica made sure Krystal was eating well during her overnight filming by sending out a snack and beverage truck to the set in Paju, Gyeonggido on October 31. The trucks offered iced coffee, churros, and more that warmed the body and soul of both Krystal and the staff. The banner on the snack truck also read, "My lovely Se Na unni's treat! Let's all eat together<3 -From Sica unni-," showing their sisterly love.

A rep shared, "Krystal loved her unni's snack-truck gift. She even recorded videos of herself at the food truck."