Returning baby clothes

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I had my baby shower yesterday and got an incredible amount of clothes.  I appreciate all of the gifts, however, I just have way too many.  Either my little boy won't be able to wear them or they aren't weather appropriate for the size and no one included gift receipts. Wil babies r us or Carter's still let me return these items, still with the tags on, for store credit? 
Thank you in advance!