I noticed on the page a block of text which I put through a machine translator; it was clear enough that the text was care information.
I had a friend translate it for me, and I thought it might be helpful for others who have purchased the same series. I sent her the text from the JSK page, although it probably applies to the OP as well.
1. Gently hand-wash the dress; do not machine-wash. The dress has moon and star shaped metal accents; these metal accents have sharp edges. When hand-washing the dress, be careful not to scratch the fabric with the metal edges. Wash the waist ribbon separately.
2. Gently squeeze the water out. Do not wring it or machine-dry.
3. The seller assumes no responsibility for damage arising from washing the dress.