Reformation Zya Silk dress

I bought this dress for a wedding but it’s too big on me. Retail is $328+tax so price is firm Brand new with tags ; smoke free and pet free home Reformation Zya Silk Dress Aliso Print Size 8 (would fit a size 6) - I am a size 4 and although I can wear it , it is lose through my waist. I wanted more of that “snatched” look. Please search online for pictures of the dress on and for the brands sizing chart