I could imagine with a poly bag or the smal usps priority box it would be less the $6, last time I mailed the small box it was like $5.40 but then I also do the delivery confirmation for $.88 on my own as protection. It's a very pretty dress, does it have any give at all my 7 yo gymnast currently is in a 10/12 but it just depends and we still have a bit before christmas. Thanks for listing oh fanned, watching and WELCOME to Listia!!