try
www.continentalclothing.com no label just size and wash instructions, easily as good as american apparel.
it's against E.U law to sell without wash instructions and certain manufacture details. if you're using american apparel, leave the label in and simply add yours on top, they have a strong brand identity and it will help you to sell.
if you really dont want to leave them in, get they proffesionally changed for less than 1 euro per shirt, its worth it other wise you'll have people sending back your shirts faulty.