not sure what to do about take home outfit?!

So we are not finding out the gender and I bought a bunch of clothes in newborn/0-3 months and was just planning on returning what we won't need/use. I'm just not sure what to wash and bring to hospital since we won't know the gender or how big baby will be. I could wash it all but once the tags are off I can't return or exchange it...anyone  have any advice??