She's gonna be scared of happy AND her fans after this...
Unfortunately, we're not just talking some frivolous feud... because Ally Brooke was actually attacked onstage by a crazed Harmonizer!
Just a day after enduring a similar assault at the Monterrey International Airport, the 23-year-old pop star had to be saved by security when the fan squeezed her too tightly, pulling her hair and knocking her to the ground in the process!
Luckily, Ally didn't need to call in any work from home days as she quickly got up and continued the performance... despite absolutely ZERO help from her girls.
In fact, Dinah Jane actually waved goodbye to the kicked-out concert-goer... and even blew him a kiss afterwards! LOLz!!
Ch-ch-check out fan video of the decidedly not dope attack (below)!!!
[Image via Fifth Harmony/Instagram.]