December 29
Never
November 06
August 5th is the next date they are coming ! They will be on the scream tour
There next tour date
Look on there website at mindlessbehavior .com
Yes Mindless Behavior Would Date Younger Girls
the lowest age mindless behavior would date is 2
No 
Mindless Behavior would most likely date girls from ages 14 &nd up
u have to be 13 or older to date mindless behavior
Since their concert schedule (which is trivial to obtain by typing "mindless behavior concert schedule" into the search box on Google) has them in Atlanta GA on that date, I'm pretty confident that the answer is No.
YES.