Kylie Jenner -- Attacked By Fan Outside Chris Brown Concert (VIDEO)

Kylie Jenner was the victim of a nasty attack Friday night after one fan pulled her hair, snapping her head back.

Jenner was leaving the Chris Brown concert in Anaheim when the incident took place -- you can tell by the look on Kylie's face, it was painful.

Luckily her security stepped in quickly and Kylie continued on her way.

Hair-pull aside, Kylie had an awesome time watching her bf Tyga perform with CB.