matty b this quiz is about mattyb lets see how much u know about him lets see wat u get good luck shaunaoflynn10 published on October 03, 2014 Stacked 1/5 how old is matty b 9 10 11 2/5 when is mattybs birthday 23 of october 6 of january 9 of august 3/5 what year was matty b born 2004 2005 2003 4/5 how many sisters dose he have 2 1 3 5/5 how many brother dose he have 4 3 2