Girls' Generation's Seohyun took part in the April Fool's day festivities by making a cute joke on her Instagram!

She shared a photo of herself wearing what seems to be her old high school uniform, and commented, "Time travel. I'm... actually 17 years old. #HighschoolerHyun #InReality27."

Her tone might be more nostalgic, but the joke's still on us, because for a 27-year old, she could easily pass for 17 with her un-aging looks!! Nonetheless, happy April Fool's!

https://www.instagram.com/p/BSUY8Q5Fm3O/