f(x) Krystal's photos taken over several years was revealed.

A set of photos titled 'Krystal's legal photos' were posted in an online community.

Krystal flaunts her cute and innocent beauty while showing off her unchanging beauty. Even for the passport photo that is known to come out bad, she manages to flaunt her perfect beauty.

Netizens who saw the photos commented "Krystal looks good even in legal photos," "The prettiest passport photos I've ever seen", "I'm so jealous of her natural beauty", and etc.

Photo Credit: Online Community