Harry Potter fans all over the world are well aware of actress Emma Watson's age, but apparently, JFK's customs agents are not.
According to the NY Daily News, Watson was stopped at the airport over the Christmas holidays because passport control thought she was an unaccompanied minor.
The British actress, 22, posted a series of Twitter posts where she explained the experience to followers.
"The sad thing is that this is not the first time this has happened," she said.
When the passport control asked where her guardian was, she told them she was 22.
She said it taught her a lesson: never wear a backpack again.
Despite looking young, it's clear Watson is very mature, particularly when she does interviews.
A recent interview with Glamour magazine demonstrated her maturity, as she talked about hairstyles, dating life, and fashion.
Watson complained that her love life is difficult, as everyone she gets photographed is automatically considered her boyfriend.
"It just makes it look as if I've had, like, 6,000 boyfriends!" she said.