It's the smack seen around the world.
An overzealous fan got a little too close to Rihanna at her concert in Birmingham, England, on Monday night. While singing "We Found Love," the songstress decided to walk down by the front row, only to have someone tug on her outfit. Ri-Ri quickly turned and struck at the person with her microphone and walked away.
But the Barbadian beauty isn't the only singer whose fans can get a little too close for comfort during their shows.
Here, we give you six more reasons why our fave superstars need so much security...