Where can sports bras be purchased?

well there are many places. If you are looking for ones that are not pricey, try Walmart they have many sizes including pre teen. Target, beals, and other places of the sort also carry these feminine items. Of course it also is important about size. usually on the tag it will say how to measure. if you get measuring tape(the kind you use for sewing) you measure around the rib cage and at the bust. your welcome. Usually your local sport's stores.